I had quite a nice win as White against the Pribyl System (or Czech Defence) recently. There were a few minor mistakes but that's to be expected in club-level chess, and I was quite pleased with how I played on the whole. I have to admit that I knew no theory past move 3, but I stumbled into a fairly mainstream response which has been used by some grandmasters (although most players prefer 5.Bd3 to 5.Bd2 according to the database). Yes, it goes to show that I don't always play gambits, although admittedly I did leave my b2-pawn hanging for a couple of moves.
Meanwhile, there was some good bloodthirsty chess in Game 9 of the Anand-Carlsen match with both players pressing strongly for a win, but sadly Anand's aggressive play was abruptly cut short by a large blunder on move 28. I found a good analysis of the game at the ChessBase website.