Pretty much any "reality" show is right out for me. They seem to be a whole lot more about people posing for the camera and interpersonal spats than any supposed subject the claim to cover.
As for the gong show remakes ... I've never seen any of them aside from the occasional bit when flipping channels. No thanks.
Reality shows? Does Dirty Jobs count? I liked it, though the last season was poor.
Recently I've found myself watching the science channel a lot. I'm still waiting on an explanation of string theory and multiple dimensions dumbed down enough for my feeble mind to grasp...