In my opinion, the funniest sitcom series this century. Larry David continues to write great material in the sixth season of Curb Your Enthusiasm. Curb isn’t to everyone’s taste — there’s a lot of swearing and Larry David makes free with stereotypes. What stops this show being offensive beyond belief is that he’s always sending up his own prejudices, or being over PC and have it backfire on him. A classic example from season four is when he and Richard Lewis are stopped by a blind man who needs help moving home. Larry wants to move on but Richard insists that they help, “How could you not help a blind man?” Larry: “How could you say ‘blind man’ in front of a blind man?”

Here’s the season six promo video:

By their own admission, the Klein Four Group is the première a capella group in the world of higher mathematics. They are based at the Northwestern University mathematics department.