If you're a Seinfeld fan, Max... you really, really ought to check out Curb Your Enthusiasm. If you don't have HBO, you can rent the first season on dvd at Blockbuster. Larry David is very responsible for what was funny on Seinfeld... the guy is awesome. When he left Seinfeld, the show started to go downhill.
Also, forgot to mention another kickass comedy show... the Office. Do yourselves a favor and rent/buy the 1st season on DVD or watch it and season 2 on BBC america. There's a reason it beat Friends and everyone else at the Golden Globes.
It's not your typical crappy dry British sitcom, either, so don't be put off by it's British-ness.
But you want to make sure you watch it before NBC makes their "American" version next year. That never works well.
I saw an ad for The Office .... I forget where though.