I wanted to start a thread where a bunch of us would compile all of Lee's best line into one place. So I'll start with my favorite.
"NO. You don't touch that boy, you don't TOUCH anybody. I've got a little girl I'm trying to protect in here too. You want to get violent you old fuck?! Well, COME ON. You better have a plan to kill me though, because it's ME before anyone else here!" - Lee to Larry at drug store.