Here's a good tactic to put the evil mastermind off side. When you've been captured are about to be subjected to the inevitable megalomaniacal evil villain monologue, taunt the villain! Rattle off a list of how incompetent and stupid he is, and how all his plans are pathetic, and how his underlings are ripping off his evil villain employee pension plan behind his back.
Even better if you can keep this rant up for a good five minutes without letting the villain get a word in edgeways. We guarantee that your GM will be impressed with your roleplaying skills.
Obi-Wan: You know, for the leader of the Separatists, you were really letting Nute Gunray get the better of you.
Count Dookû: Hwat are you talking aboat?!
Obi-Wan: Oh, nothing. It just looked like he was running that little meeting back there.
Count Dookû: You think you are so clevair! You do not even see hwat we are up against. Hwat is under your very, 'ow you say... nose!
Obi-Wan: You're about to tell me, I'm sure.
Count Dookû: 'ow much do you know aboat ze Shoncellor and 'is so-called "Peace Moon"?
Obi-Wan: I know that you stole the plans, thereby obstructing the building of a symbol of harmony and unity.
Count Dookû: Unity?! Sacrebleu! Unity through fear!
Count Dookû: Zis moon, it eez ze weapon!
Obi-Wan: I find that very hard to believe.
Count Dookû: Eet will be capable of destroying ze planet!
Obi-Wan: It'll be in orbit. Do you know how ridiculously infeasible it would be to crash it into the planet?