I will start the thread off, you guys can add others if you like.

Episode III:

"only a sith deals in absolutes"- Obi wan Kenobi

"if your not with me then your my enemy" Pre-suit Vader uttering a bushism though what bush actually said was " if your not with us, then your against us" Pretty Clever George, Bush must be a sith lord,lol.

" Don't try it Anakin i have the high ground"Kenobi

"You Underestimate my powerrrr!!!!!!!" Vader as delivered by a wooden hammy Hayden Christensen, awful beyond words.