I think that BBT actually doesn't use a laugh track, but the audience is prompted.
Occasionally I found they had a decent episode, but I'll admit to liking Charlie Sheen in 2 1/2 Men as well - was perfect to watch for cooking as you got the punchline to a joke before every commercial break. It was like three mini episodes per show that had a linked plot.
Anger Management is amusing as well to watch random episodes.
Not quite, but you're on the right track. The show's recorded in front of a live audience, but the laughs are often enhanced or manipulated. That's because when they're recording, the fifth take may be the best one from a film perspective but the audience reaction is likely much less enthralled than the first take — you can only laugh at the same thing so many times before it gets old.
So, you'd think they'd capture the laughter from the first take and call it a day, but the big networks like sweetening the impact of the laugh tracks by adding in artificial laughs, emphasizing strange and/or high-pitched laughs, and just generally manipulating it to make it more TV-friendly.
Reagrdless, it's irritating. I stand by my comment — I don't need to be told when to laugh. Shows like Community, Arrested Development or Archer do it the right way. Be funny without bludgeoning me with "THIS IS FUNNY AND YOU SHOULD BE LAUGHING RIGHT NOW."