I've only seen a few episodes here and there myself. I couldn't tell you which ones, because they were all exactly the same. But between the "you're so much like Sheldon!" thing and the perpetuation of nerd stereotypes, I've come to despise it anyway.
It's not the best but it's OK...I believe the laugh track is an actual audience, Could swear I've been told that, they def need to dial back the loud laughter esp. at first...
I think BBT has been OK, obviously the earlier seasons were the stronger ones and it has kind of run out of steam in recent years. It is filmed in front of a live audience but sure they might be adding recorded laughs to the final mix.