I don't always get the exact verbiage right, but how about:
"If I want a box of screws, I'll call you"
from the episode with Keith Hernandez where George goes on a date with the daughter of the lady from the unemployment office.
By the way, was that the first use of the word, "breathtaking" as in
"My God! She's breathtaking!"
How anybody can compare some of the other lame comedies currently on the boobalah toobalah with "Seinfeld" is beyond me. "Seinfeld" is currently the best on TV and amongst the best ever on TV. (IMHO) :>)