I always liked The Men's Room and watching Bas Rutten rip into himself by acting like an utter psychopath. I say this as someone who had never even heard of the guy before hand, though, so... maybe that's all that guy does anyway. Still, he was fun to watch.

The stand-up shows were disappointingly weak, however. While I generally like Ricky Gervais, his performance sounded a bit sedated in GTAIV with little charisma, and that Katt Williams guy is just terribly unfunny. I remember looking him up afterwards to check if he was in fact a real comedian... Frankie Boyle in The Lost & Damned was alright, though.

The anime one because of course.

Until I saw this topic, I completely forgot GTA4 even had fake tv shows in it.

From what I recall, Ricky Gervais sounded really forced - like they locked him up in a recording room and commanded him to joke. I don't remember anything else about the shows...

Edit: Oh wait, the Ricky Gervais thing was in a mission with Roman.

Princess Robot Bubblegum does a great job at poking fun of anime tropes. So that.

Uhh I played a lot of gta IV but I must have missed these tv shows in the game, that or my memory is shot..... wait how did I get outside?

The Men's Room, only because I seemed to catch that playing more than anything else.