
And on what grounds? By his own admission earlier he didn't know Palpatine was a Sith Lord ("If this turns out to be true..." or whatever) and he didn't even give Palpatine a chance to hand over power! All he did was walk in, ignite sabers, and say it's over, bitch. So, when Palpatine responds with, "So it's treason then." it was spot in, IMO.
I think that was really, really cool.
My only other comment is, as most others have said, the "Order 66" scenes were just great. And the music for it was fantastic. One of the best scenes, IMPO.
I wonder if the only reason Yoda survived was because he was:
A) that much more powerful,
B) not distracted at the time like the others seemed to be, or
C) he had some forewarning because he could feel Jedi dying all over the galaxy?