season 4 continues to disappoint. even sheldon has become nearly unwatchable. I could go on and on about how the characters are your basic sitcom hacks, or how each episode's plot is completely meaningless and equally unmemorable but I think all of the inadequacies of the current state of the show can be summed up by sheldon's most obvious gaff when discussing the temperaments of super heroes. Why, may I ask, would Wolverine need a prostate exam? He is well known for his mutant healing factor which would make him more than impervious to cancers. It's a sad day when even sheldon doesn't know his comic book characters.