It's not very new, but have you seen 'Monk'?

Monk is excellent and delightful, but it sometimes has the problem that some of the humor is based on the main character being in uncomfortable and awkward situations.

I have only vague recollections of Night Court (so I don't know if it meets any of your criteria), but I note that it is being rerun at the moment.

I really like Malcolm in the Middle, but it's pretty much based on stupidity and narrow avoidance of embarrassment. I have no idea why this doesn't bother me.

There's a new Looney Tunes Series -- Loonatics Unleashed -- it's future superheroes out of the looney tunes genre. It's cute. (Channel 56, Saturday mornings.

I've had Weeds recommended to me. There are only 10 episodes so far and it's not exactly a sitcom. The commercials look funny but I get the impression it's not exactly a comedy. More like six feet under but less dark and macabre.

I like the one episode of "My Name is Earl" that I've seen so far. I've still got it on my Replay if you want to see it sometime. (Lunch today?)

When Scrubs comes back, that's a good one too.

You didn't say what shows you are currently watching, but one show you might want to consider is Gilmore Girls, which Stacey introduced me to start watching. The first couple of seasons are on DVD already. Definitely more of a "chick flick" set of plotlines than say a "blow up all the aliens" SG-1 or Star Trek sort of show, but it does have that uplifting, feel good kind of feel to it.

We really liked Wonderfalls (1 season) and Dead Like Me (2 seasons) which are available on DVD. For currently on, I haven't found a lot of sitcoms that I have enjoyed much lately. The one exception being the one episode of "How I Met Your Mother" that I saw recently. I'm not sure it's a substantial enough show that I would want to watch it all the time, but it seems like good light comedy.

I enjoy "How I Met Your Mother" because we know it all turns out right in the end. There's this long string of rejections, but he's telling it to his kids as the story of how he met their mother, so we know that it will come out ok.

British comedy Coupling, all four seasons. Hilarious! Seriously! And you'll want to watch them twice, because there are nuances to some of them you don't catch the first time through. Really.

Seriously funny! (And the pilot episode is okay, but the rest are a lot funnier, we thought :) )