The senate chamber is awesome. One of the epic special effects things that really worked. I like to think it was used by the Imperial Senate and then the regional governors, so that when Leia & Co take over they can use it again.

ahahahaha I didn't notice ET. I did notice WALL-E in the Jawa transport, though. XD

I'm pretty sure every single person to appear in any capacity whatsoever has a Wookieepedia entry.