Funniest TV Scenes of all time - Really!

Ignoring reality TV of all kinds we have:

Friends: Joey apologizes to Ross
http://www.youtube.com/watch?v=bIIm7yBdUG4

Mary Tyler Moore Show: Ted meets Walter Cronkite
http://www.youtube.com/watch?v=nW1k0q5pBfU
from 11:00 - 11:20

Seinfeld: Vandelay Industries
http://www.youtube.com/watch?v=_T35QhLx_KI

Taxi: What does a yellow light mean?
http://www.youtube.com/watch?v=pvn-tBeLpCk (towards the end)

Mr. Show: The Pre-taped call-in show (David Cross)
http://www.youtube.com/watch?v=HrlS9_n8GX4

Honeymooners: Ralph's apology to Alice
http://www.youtube.com/watch?v=r0qTizSkOCY