Mark Thomas is a British political activist and comedian: he's the original Ali G, as he was the first - before Sacha Baron Cohen; who was obviously inspired by his work (and toned down his politics). I highly recommend any of the Mark Thomas Comedy Product series (or his one offs like Mark Thomas: Weapons Inspector) as he's the rare type of comedian who can communicate the bland bullshit of intricate politics in a hilarious (yet slightly depressing) way - like a later British Bill Hicks.