Okay, I'm going to put out a few Sam conversations that always make me laugh (so it's not just her, but I hope you can forgive me that):

"Jack O'Neill: I just walked in with a handfull of ingredients for my world-famous omelette!
Sam Carter: World-famous huh? What's in it?
Jack O'Neill: Eggs.
Sam Carter: I don't think that that actually qualifies as a recipe.
Jack O'Neill: Oh don't kid yourself, there's a secret ingredient I can't tell you what it is or I'd have to shoot you.
Sam Carter: It's beer isn't it?"

Jonas Quinn: Hey, Major? How do I know what color to wear?
Carter: We call each other every morning.

Carter: There's a circuitous path of real timewinding through the temporal field.
Mitchell: It's a maze? It's a maze.

Ba'al: I know where you come from you're considered relatively intelligent, but by galactic standards that's not really saying much. Wouldn't you agree? Carter punches him.
Carter: You know, if you're not going to help you're really not much use to us, and if you're not much use to us then there's really no point in keeping you alive any longer. Wouldn't you agree?
Ba'al: I'd, ah, be delighted to help.
Carter: Great to hear.

Aaaaaaaaand because I know you'll appreciate this one:

Carter: It took us 15 years and 3 super computers to MacGyver a system for the gate on Earth.