The scene before Anakin and Obi face off with Dooku, where they and R2 are goofing around with the elevators and stuff. Nasal battle droid voices notwithstanding, I liked the banter between the two characters.
"Grant Allen [...] had written a book about the Evolution of the Idea of God. [...] it would be much more interesting if God wrote a book about the evolution of the idea of Grant Allen." ~ G. K. Chesterton, The Everlasting Man