I doubt it's about nothing. Though I do think many theists will be upset to have their stereotypes of us squashed when they realize there is no satanic programming and no competitive baby-eating game show.

Its just a joke saying basically "there's nothing there" because atheists don't believe in God.

This is true about the TV show "Seinfeld."

Nobody would watch a show about atheists because there aren't enough of them, and even they aren't likely to define themselves by their atheism.

In that way, I guess you really could say that atheism is about nothing.

Only the fundie thinks atheism is about nothing.

Kind of dumb, is there a punch line?