Funniest TV Shows Ever: let’s start with the funniest show ever – Arrested Development. Nothing else comes close. Can’t even pick a favorite character, they’re all so great.
Here’s the rest, in no particular order:
The Critic: canceled way before its time. Deserves another shot. Jon Lovitz was perfectly cast.
Seinfeld: brilliant, but doesn’t age as well as I thought it would.
The Simpsons: seasons 3-8 were near-perfect (Deep Space Homer, Mr Plow, etc). Slow, steady slide since then, but still a champ overall.
Night Court: similar to the Simpsons – after the first season got out of the way, it got brilliant for a few years, and then got a bit silly. But those middle seasons – amazing. Harry, Dan, and Christine were awesome characters.
Cheers: didn’t think it would survive the Diane/Rebecca transition, but it did (mostly). And unlike Seinfield, it seems to hold up very well over the years.
Duckman: if you’ve seen it, you know. Probably the “fastest” funny show ever – the zingers came faster than you were able to keep track of ‘em.
Dick Van Dyke Show: true classic – set the standard for many, many years.
South Park: No sacred cows. Love it. Ever after 13 (!) years, they’ve still got it.

Please explain what you mean when you say that Seinfeld doesn’t age as well as you thought it would? That is the best show ever! (I’m also a fan of Cheers.)