Here are my favorites.
Here is a list I composed of my all time favorite Seagal movie lines:
"You guys think you're Above The Law, well you ain't above mine!"
"One guy thought he was invinsible, the other thought he could fly. They were both wrong!"
"Come get some."
"Is that the best you got boy?"
"If that's the best you got I'm just gonna have to kill you."
and
"You don't look like you're gonna be waking up happy now."
"Maybe it's mood swings, my hormones, I dunno, but I'm starting to get in a bad mood!"
"You **** with my family, you die!"
"You give me what I need I'm gonna leave here a nice guy, you don't I'm gonna f*ck you up!"
"I'll have a hundred federal agents come up in here, to this little hic town, and crawl up every orifice you got. When they're done you can go to your favourite proctologist and get a nice soothing ointment, and rub it on the hole that hurts most."
"Why don't you go back to your own genetic puddle and go for a swim boy?"
"I find out you're lying I'm gonna come back and kill you in your own kitchen."
"My guy in D.C. tells me that we are not dealing with a student here, we're dealing with the Professor. Any time the military has an operation that can't fail, they call this guy in to train the troops, OK? He's the kind of guy that would drink a gallon of gasoline so he could piss in your campfire! You could drop this guy off at the Arctic Circle wearing a pair of bikini underwear, without his toothbrush, and tomorrow afternoon he's going to show up at your pool side with a million dollar smile and fist full of pesos. This guy's a professional, you got me? If he reaches this rig, we're all gonna be nothing but a big goddamned hole right in the middle of Alaska. So let's go find him and kill him and get rid of the son of a bitch!"
"This is my favorite moment in life, when the predator becomes the pray."
Go the Movies forum and scan down the titles of the threads there. 
