Mmm... Hal Sparks
I agree with most arguments here, that parents have the ultimate control over what the kids watch. Say, if something undesirable comes on the telly and you don't want your kids watching them, turn it off and take them out. Go to a park or go for some ice cream. Parents don't spend enough time with their children these days and the kids are left at home with the television and the computer. Back to square one.
I know I sound a bit too idealistic and I know that not every child will choose ice cream over television (or simply, the 'child' is a teenager with a mind of his/her own and will blatantly tell you that "Parks are so not cool anymore, mom!"). In that case, watch the program with them and discuss the issues at hand.