Actually, I laughed out loud at my computer a few times tonight. Check out this capture of an Easter egg from the upcoming Revenge of the Sith DVD (best if viewed under Windows; the Mac version of WMP messes something up, as usual).
Updated: link to dancing Yoda removed. The original was removed at LucasFilm’s request. Click here to see how to access dancing Yoda on the Revenge of the Sith DVD.