Question: When Palpatine tells Anakin to kill Dooku, why doesn't Dooku just tell Anakin that Palpatine is really a Sith lord? He's just been betrayed by Palpatine, so what does he have to lose?
Chosen answer: It was a combination of him being (1) shocked at the betrayal, and (2) trapped. Anakin trusts the man who he believes Palpatine is, and Dooku knows this. After everything that Dooku has done during the Clone Wars, it's highly unlikely that he could suddenly convince Anakin of the truth.
Question: I've read that Anakin joined Palpatine because he felt remorse over the death of Windu and that he would have been expelled from the Jedi order for sure. Couldn't he have just lied and said that it was Palpatine that killed him and that he played no part in it?
Chosen answer: No, because it's wrong. Anakin joined Palpatine not out of remorse or fear of being expelled from the Jedi Order, but because he thinks that, with the Sith Lord's help, he can save Padme from dying. If he turns Palpatine in, he believes that she'll die and that's not an option for him.
Question: If Aayla Secura's a Jedi Master then why does she wear a skimpy brown leather outfit? She should be dressed more like the other Jedi masters.
Answer: In-universe, it is the typical clothing of a Twi'lek female. Jedi are allowed to wear whatever clothing they want, though most choose the robes fitting the ascetic life of a Jedi.
Answer: Several possibilities. There are cultural differences in how the different races dress that may supersede the traditional Jedi uniform. However, and more likely, movies often sexualize women characters by dressing them in skimpy, skin-bearing costumes, even when it is out-of-sync with how others are dressed.
Answer: Going along with LorgSkyegon's answer, the clothing is common for female Twi'leks. Many Jedi observe a few traditions, customs, etc. of the worlds they came from. Since they are guardians of peace across the galaxy, they need to respect all cultures. It can be helpful for a Jedi to acknowledge their background, especially if they ever need to deal with a situation involving their species/homeworld.
Question: After the events of this movie, why does Darth Sidious call himself Emperor Palpatine? Vader was expected to ignore his old life as Anakin Skywalker. Or was that a personal choice of Vader's?
Answer: Anakin, renamed Darth Vader, is a choice by Palpatine/Sidious. It is a Sith name. Darth Sidious, however, has two roles to play as both a Sith Lord and occupying an official position as the Emperor, so he uses his real name for that. The rest of the universe cannot know him as Darth Sidious.
Question: I know one of the reasons Anakin slaughtered the younglings at the Jedi Temple is because he knew it would add to his power, but is there any other reason why?
Answer: He was instructed to eliminate all Jedi. Since the younglings were force sensitive and training to become Jedi, they were eliminated as well.
Question: Did Darth Tyranus know that Sidious was going to betray him?
Chosen answer: Nope, you can see the surprise on his face when Palpatine orders Anakin to kill him. He then realises Anakin is Sidious' new apprentice. He fully expected to defeat Anakin.
I read that Palpatine/Sidious had given Dooku/Tyrannus a fake plan: Tyrannus thought they would kill Obi-wan, then convince Anakin to join the two of them.
I think that is partially right. Though I would sooner think the plan was to incapacitate Obi-Wan, which Dooku did and then focus on Anakin to get him to the dark side. Dooku had a chance to kill Obi-Wan but didn't. Besides, if Dooku did kill Obi-Wan it is almost sure Anakin will kill Dooku for it.
If I remember correctly, at the moment, the plan was described in the book "Labyrinth of Evil" by James Luceno. Although, I don't know how many books are canon now.
Question: How did Anakin Skywalker survive Order Sixty Six? Since Anakin was a Jedi until around the time of the Order, how did the troopers know not to kill Anakin?
Question: What does Anakin means when he tells to Padme that if it not were for the kidnapping of Palpatine, they would be separated "for a lifetime"? He also says that "they" wouldn't have brought them back from the outer rim sieges, who are they and how does the Chancellor's situation affects theirs?
Chosen answer: Palpatine had his eye on Anakin as an apprentice since after the Battle of Naboo. The kidnapping and rescue provided a legitimate justification for Palpatine to request that Anakin be kept close at hand as a "personal favorite Jedi" rather than being sent to the Outer Rim to fight the Separatists, which could have kept him away from Palpatine's influence for years.
Answer: It was the same test that he gave Luke in "Return of the Jedi." Strike down an unarmed, unresisting man, and he's got The Right Stuff to be a Sith. Luke failed the test by refusing to kill him. Anakin did not.
Question: Is it possible that Mace Windu could've landed on a speeder after being thrown out of the window in Palpatine's Office?
Answer: The outside possibility that Mace Windu could have landed on a speeder or other vehicle does exist, given the fact that such vehicles were continuously passing by the window of Palpatine's office. However, Windu is officially considered to have been killed by falling to his death after Palpatine uses his Force lightning to send him through the window.
Question: In "Empire Strikes Back", when Vader reveals that he is Luke's father, he tells Luke to search his feelings and sense the truth. Luke is able to do this after a limited amount of Jedi training. How come Anakin calls Padme a "liar" on Mustafar, despite spending more than half of his life (at the time) as a Jedi? Shouldn't he have known that she was telling the truth?
Answer: By the time Anakin calls Padme a liar, he had begun his descent into the Dark Side and was becoming much darker as a person. As soon as he saw Obi-Wan, he immediately jumped straight to the conclusion that she had lied to him without putting any real thought into the scenario, so the likely explanation is that, in his anger and darkness, he did not really bother to sense her feelings and he just assumed that she brought Obi-Wan to Mustafar to kill Anakin. If he was much more calm and spent a few seconds to sense her feelings a little, it would have been more likely for him to discover that she was telling the truth, but by that point, he was much closer to the Dark Side for him to do that.
Question: How far down was Anakin's left arm cut off? His right arm was cut down to just the elbow.
Question: After Anakin is finished killing everyone in the Mustafar complex, there is a scene where he is outside on some sort of balcony, looking out at what appears to be an eclipse in the sky. I think this is intercut with Obi Wan visiting Padme and telling her about Anakin turning to the Dark Side and asking if she knows where he is. As Obi Wan leaves, with John Williams' highly emotional 'Anakin's Dark Deeds' score reaching it's climax, it cuts back to a very emotional looking Anakin, and as it pans in on his face, you see tears running down his cheeks. Why?
Answer: On the Blu Ray commentary, it is explained that this is to show that even at this stage, there is still good in him and the struggle and suffering raging within him as his conscience knows what he's doing is wrong. But he can't stop either, as he's convinced this is the only way he can save Padme from certain death - Palpatine has seduced and twisted his mind with promise of unlimited and great power including helping him discover the secret of Immortality only ever achieved by one Sith Lord previously, Palpatine's own master, Darth Plageius.
Chosen answer: It is explained that in a duel between Asajj Ventress and Anakin Skywalker, Ventress manages to strike Anakin across the face, she does this to prove that she could kill him at will (she claims she could have as easily beheaded him) Anakin defeats her however, forcing Ventress to flee.
Question: Why is it that when Palpatine-Sidious gets zapped by his lightning his face wrinkles, but when Luke gets zapped in Return of the Jedi, he remains relatively unscathed?
Answer: Palpatine was using relatively weak (but still painful) bursts of lightning on Luke as a means of torture, wanting Luke to suffer before he died. When he attacked Windu, he used powerful bursts of lightning, trying to kill him and thus ravaged his own body by the reflected attack. Or as some sources indicate, the "damage" was Palpatine's true form, which he had been hiding with the force, and reverted to this form to sell the act that he was "too weak" as he expressed.
Question: In Episode II, Anakin jumped out of a moving speeder while he and Obi-wan were pursuing the bounty hunter who put the poisonous insects in Padme's bedroom. Other Jedi do similar falls in the Clone Wars movie and series. So why did Mace Windu die from being pushed out of Palpatine's office window?
Answer: Anakin hadn't just had his arm cut off and been electrocuted at full force by a Sith Master. Windu's in phenomenal pain and is likely barely conscious; in no condition to focus the Force enough to survive the fall.
Question: Shouldn't Anakin be angry when, after he finally converts to the Dark Side and kills Mace, Palpatine/Sidious reveals that he really doesn't know how to save someone from death, but if they work really really really hard, maybe they can figure it out? Shouldn't Anakin fly into a rage at this? He has no reaction, just kneels and says he will pledge himself to the Emperor's teaching.
Chosen answer: He probably is, but he's out of options at that point. Having acted directly against the Jedi by participating in Windu's death, he can no longer turn to them for help. If he wants to save Padme, he has no choice but to sign up with Sidious and hope that they can figure it out, no matter what his feelings on the matter might be.
Answer: The "rule of two" the Sith adhere to means there are always only a master and apprentice. Both continually look to improve their situation. The apprentice hopes to eventually kill his master and become master himself, while the master is constantly searching for a better apprentice.
I don't think Sidious really wanted to carry on the Sith Order, though. His true goal was to rule the galaxy and find ways to extend his life. He was focused on himself.