Good grief, too many too list! Why do these questions assume people just have a single favorite?
But here are some quotes I like (just a few ):
"Boring conversation anyway"
"To crush your enemies, see them driven before you, and to hear the lamentation of the women."
"I have crossed oceans of time to find you"
"I know"
"Crom, I have never prayed to you before. I have no tongue for it. No one, not even you, will remember if we were good men or bad. Why we fought, or why we died. All that matters is that two stood against many. That's what's important! Valor pleases you, Crom... so grant me one request. Grant me revenge! And if you do not listen, then to HELL with you!"
"I would relax... I would sit on my ass all day... I would do nothing."
"We get caught laundering money, we're not going to white-collar resort prison. No, no, no. We're going to federal POUND ME IN THE ASS prison."
"As the leader of all illegal activities in Casablanca, I am an influential and respected man."
"Bacon tastes good. Pork chops taste good"
"We're the middle children of history, man. No purpose or place. We have no Great War. No Great Depression. Our Great War's a spiritual war... our Great Depression is our lives. We've all been raised on television to believe that one day we'd all be millionaires, and movie gods, and rock stars. But we won't. And we're slowly learning that fact. And we're very, very pissed off."
"I'm the foot f*cking master!"