TBBT is one of those shows that thinks it's WAY smarter than it is. It kinda satirizes geek culture but in a completely mean spirited way. Every episode I've seen has always seemed to involve the audience laughing AT the characters rather than WITH the characters. They try to dismiss this by being pretty accurate as far as things geeks tend to be into saying "Look! See! It's the stuff you like!" while missing the point that being mocked doesn't make anyone feel good. It takes itself WAY to seriously as the arbiter of geek culture.
The IT Crowd is funny in the way a lot of good classic British SitCom is funny (Not Going Out, Red Dwarf, etc) in that it embraces the surreal and doesn't take itself seriously. Yeah, Moss is a caricature of a nerd, but in a surreal way. (Fire extinguisher catches fire) "I'll just put you over here with the rest of the fire."
I agree that Chuck Lorre definitely thinks he's way smarter than he is. I think in some ways the success of 2 1/2 Men really fed his ego in a negative way. He and Charlie Sheen really seemed to deserve each other.
Another one for the list that isn't here is the reboot of Lost In Space. It's very well acted, the family drama seems believable, and the visual effects are fantastic. I will admit that any scene with Parker Posey makes my skin crawl. She's just so natural at playing someone devious and manipulative. If you're a space junkie it's definatly worth a couple episodes to see if it's in your wheel house.