Nathan Fillion in Firefly. You sir, have good taste.The Man With the Soap said:"I swear by my pretty floral bonnet I will end you."
Cookie if you know.
Lots of good lines to pick, but I think i'll have to go for this:
"Encountered? Boy, I am covered in zombie blood and puke and eyeballs and twenty other parts I don't even recognize. We are immune as SHIT!" ~ Coach in L4D2, talking to a soldier guarding a safe zone.