The Seinfeld show first aired on TV on this day in 1989. Who do you think was the best supporting character? The Seinfeld show first aired on TV on this day in 1989. Who do you think was the best supporting character?Frank Costanza (0.00%)Newman (0.00%)Kenny Bania (0.00%)J Peterman (0.00%)Uncle Leo (0.00%)Jackie Chiles (0.00%)David Puddy (0.00%)Other (0.00%)Previous Polls
