That list had some good ones but felt way too modern... in a couple of more years people won't be quoting Wedding Crashers or 40 Year Old Virgin. No Godfather makes me sad, since everyone tries to do a Brando parody.
My most quoted movies is The Princess Bride:
"Hello. My name is Inigo Montoya. You killed my father prepare to die." - Inigo Montoya
"As you wish." - Westley
"INCONCEIVABLE!" - Vizzini
"I'm not left-handed either." - Westley
"I am the brute squad" - Fezzik
"I don't even exercise." - Fezzik
"Have fun stormin' da castle." - Miracle Max
"There's a shortage of perfect breasts in this world. It would be a pity to damage yours." - Westley
So many awesome lines, I can go on forever. And I try to use them daily.