Best Line in the series
I know a lot of people enjoy the classics like "Right in the middle of my backswing" or "Indeed" but for my money the best line in the series comes from Jack in season 7. The episode fallout as the Langara reps are arguing about who gets to go to Madronin Jack steps in to tell them the deal is off since they are unbearable. He looks at them and goes "That's what you get for dicking around". Just a fantastic delivery of a line.
EDIT: Holy cow this blew up. this is what makes the Stargate community so great. Everyone has a different favorite.