Obi-Wan Kenobi: Oh, I have a bad feeling about this!
Darth Sidious: [To Yoda.] I've been waiting a long time for this, my little green friend.
Obi-Wan Kenobi: Hello there! (00:55:10)
Chancellor Palpatine: I am the senate!
Chancellor Palpatine: Do it!
General Grevious: I was expecting someone with your reputation to be older.
Anakin: General Grevious, you're shorter than I expected.
Yoda: Destroy the Sith we must!
Darth Sidious: At last the Jedi are no more.
Yoda: Not if anything to say about it I have. At an end your rule is and not short enough it was.
Darth Sidious: The time has come. Execute Order Sixty-Six.
Anakin: I sense Dooku.
Obi-Wan Kenobi: I sense a trap.
Anakin: Next move?
Obi-Wan Kenobi: Spring the trap.
Count Dooku: I've been looking forward to this.
Anakin: My powers have doubled since the last time we met, Count.
Count Dooku: Good. Twice the pride, double the fall.
Obi-Wan Kenobi: [Screaming in anguish at Anakin.] You were the chosen one! It was said that you'd destroy the Sith - not join them!
Padme: So this is how liberty dies - with thunderous applause.
Obi-Wan Kenobi: Anakin, Chancellor Palpatine is evil!
Anakin: From my point of view the Jedi are evil!
Obi-Wan Kenobi: Well then you are lost!
Count Dooku: I sense great fear in you, Skywalker. You have hate, You have anger, but you don't use them.
Anakin Skywalker: [To Padme.] The Jedi turned against me. Don't you turn against me.
The Emperor: Every single Jedi, including your friend Obi-Wan, is now an enemy of the republic. Do what must be done.
Mace Windu: You are under arrest, Chancellor.
Senator Palpatine: Are you threatening me, Master Jedi?
The Emperor: You will soon become a very powerful Sith. Henceforth, you shall be known as Darth...Vader.
Anakin Skywalker: Thank you, my master.
The Emperor: Rise.
Chosen answer: Powerful force users seem to have some degree of control over their bodies even after death. In the later series, Luke's wife Mara Jade Skywalker only allows her body to disappear when her killer, and nephew Jacen Solo arrives at her funeral as a clue. Thus it appears that a powerful force user can simply choose if they wish their body to disappear.
Darius Angel