Defenitely Seinfeld. Why? Because i laughed my heart out 180 times.
And I would still laugh if I see it again. You must admit it was a killer.The jokes were so true and natural and so genius. The characters were also the best, only by looking at Kramer made me laugh. George was the impersonation of a stupid but "trying not to be" human, and Elaine...don't know. I'll let you comment on her :P