Compiled BEST END from other thread:
If Nunnally betrays Suzaku and does it in a Just as Planned manner, I'm going to run outside my house (it's 1:00 AM when Geass airs) and scream "FUCK YEAAAAAH" at the top of my lungs.
I don't care about the neighbors, that would be the best twist ever. Even more delicious? Lelouch's face when his pure little sister turns out to be an evil, black hearted manipulative bitch.
Also, the instant she does this she opens her eyes and stands up.
And then pulls out a hidden gun and shoots one of the main characters.
And reveals her Gaess.
And sticks her tongue down Lelouch's throat.
Also, it has to be revealed ten minutes beforehand that Anya is Lelouch's real sister and Nunnally is the emperors puppet. Which has actually already been theorized.