Trivia: One of the severed heads on a spike is that of former president George W. Bush. Before shooting the scene, George RR Martin asked writers and producers David Benioff and D.B.Weis to have a cast of their 3 heads to be put on the spikes, but for budget reasons they opted to get a box from HBO's warehouse with used severed heads. They noted that one was Bush's, but they put a wig on it and got away with nobody noticing. In the Blu-Ray commentary the producers revealed the story, and got a lot of criticism from the right.
Trivia: The horse heart that Daenerys eats was actually made of gelatin, and genuinely tasted dreadful - her physical revulsion at eating it is real. It had dyed pasta to simulate veins, and was injected with fake sugary blood, which attracted flies. The blood was so sticky and ended up covering Emilia Clarke to such an extent that after filming it glued her to the toilet seat.
Trivia: Cersei remarks to Tyrion that she had heard his nose was cut off during the Battle of Blackwater Bay. This is a reference to the books, in which part of Tyrion's nose was indeed cut off.
The Mountain and the Viper - S4-E8
Trivia: Pedro Pascal used to let fans playfully gouge his eyes, in reference to Oberyn Martell's brutal death scene at the end of this episode, which led to him getting an eye infection.
Winterfell - S8-E1
Trivia: The first Greyjoy soldier killed during Yara's rescue is played by an uncredited Rob McElhenny, best known for playing Mac on It's Always Sunny in Philadelphia. (00:27:47)
The Mountain and the Viper - S4-E8
Trivia: Towards the end of this episode, Tyrion and Jaime have a discussion about their brain-damaged cousin Orson. This is supposedly a swipe at Ender's Game author Orson Scott Card, who is a harsh critic of the show.
Trivia: Of the 43 actors credited as being part of the main cast, Peter Dinklage is the only American.
Trivia: Although he plays the eldest Baratheon brother Robert, in real life, Mark Addy is nearly 8 years younger than Stephen Dillane, who plays the middle brother, Stannis. Additionally, the real-life age gap between Dillane and Gethin Anthony, who plays the youngest brother, Renly, is more than 26 years.
Trivia: Although they are the show's two top-billed actors, the shot just before Ned Stark and Jon Snow part ways as the former heads to King's Landing and the latter heads to Castle Black is the only shot of the entire series where Sean Bean and Peter Dinklage are on screen together. (00:21:25)
Answer: Basically it's because he broke his vow. A member of the Kingsguard is sworn to protect the king at all costs. Jaime elaborates more on the deed to both Catelyn Stark and Brienne of Tarth, telling Catelyn that no matter what course of action he took, he would be breaking one vow or another (i.e. if he obeyed the king, he would conversely be disobeying his own father), and telling Brienne that the Mad King was planning on burning all of King's Landing, but he did not bother to tell Ned Stark that. Ned Stark felt that killing Aerys was dishonorable and excessive. Robert Baratheon still could have usurped the throne without Aerys being killed.
Phaneron ★