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.
"There is something going on in time and space, and beyond time and space, which, whether we like it or not, spells duty." -Winston Churchill
"For of all sad words of tongue or pen, The saddest are these: 'It might have been!'" -John Whittier
"Apathy is death." -Kreia