Jim Jefferies is one of the greats in comedy, and has been for a good while. He's not extremely known, but I have seen him for years, and to me, he's a fucking brilliant comedian.
George Carlin, Bill Hicks, Louis CK, Jim Jefferies, Chris Rock, Jim Carrey (Hey, he was fun...) - Also, the clip was insanely hilarious, and spot-on. He makes you think, and that, to me, is what turns a comedian into a great comedian.