I don't like laugh tracks. It's part of the reason why I don't watch many television shows. The writing, editing, and acting should be good enough to manipulate a person's emotions without the need of a laugh track.

30 Rock isn't a single camera show. They were shooting with two cameras when I was on set. One was a Steadicam and the other was some stationary camera. I doubt most shows like that are shot with just one camera due to the fact that they have shorter deadlines to meet.