Jimmy Carr is genuinely sharp, the majority of this is painfully scripted so comes across that way, but his stand up stuff (especially the off-the-cuff audience interaction stuff) is amazing!
Charlie Brooker isn't THAT funny...He's clearly intelligent and funny if you agree with his rants, otherwise for me, he just talks about things in a long winded OCCassionally EMphasised pissy way, before ending the rant with an obscure insult like "you mono copulating ****tard" ... Funny sometimes, but very formulaic!