My friends and I have the best pick up line ever. It works with a 98.9% success rate. Here's what you do. Its called the "wooden leg".
First: Find the hotest chicks in the bar, usually a group of them is best. Designate one of your buddies to be the "wooden leg". Have that person go up to the group of hot chicks and ask them, "would you ever date a guy with a wooden leg?"
They usually respond with sure if he was a nice guy or maybe I would, etc. As long as they say "yes" you're good to go.
Second: Once they have given you their answer of "yes", turn to the side and pump your fist and say "sweet, or yes!" or something to that effect. Then turn and walk back to your friends, but keep one leg straight and hobble like you have a wooden leg. Make sure they can see you.
This is an awesome trick, I've done it many times with my friends, and the chicks laugh, and its a great way to get a way in to talk to them.