I've never seen this one discussed, so I'll give you my top 5:
- George and Kramer in "The Stall":
Jerry: You're crazy! Kramer: Am I? Or am I so sane that you just blew your mind? Jerry: It's impossible! Kramer: Is it? Or is it so possible that your head is spinning like a top? Jerry: It can't be! Kramer: Can it? Or is your world crashing down on you?
- George and the girl he breaks up with:
George: You're giving me the 'it's not you, it's me routine?' Girl: Okay George it's you. George: You're damn right!
- George tells Jerry he doesn't want hope:
George: I don't want hope. My goal is to be hopeless. Jerry: So hopelessness is the key? George: It's my only hope...
- Kramer and George's Dialogue in "The Keys"
Kramer: Do you have a job? George: No... Kramer: Do you have any money? George: No... Kramer: Do you have any prospects? George: No... Kramer: Do you have anything on the horizon? George: ...No... Kramer: Do you have any reason to get up in the morning? George: (pause) I like to read the Daily News!
- Jerry and George discuss a woman:
- George: Is there a pinkish hue? - Jerry: There's a hue... - George: Is she sweet? I like sweet, but not too sweet. You can throw up from that. - Jerry: You won't throw up. (pause) She likes to throw up...
ROTFL!
Milan Gokhale