http://tvbythenumbers.zap2it.com/wp-content/uploads/2010/05/big-bang-theory-may-2010-350x195.jpg

It does Huge numbers on CBS and is the most dominant show in syndication....when did it become this juggernaut?

Probably after the first season it hit its stride it is a funny multi-camera show.

Season 3 when it aired behind Two and a Half Men. Last season did worse but still exceptionally, and now it's bigger than ever in season 5.