So I've been playing Gears Of War 2. Man oh man. That game is testosterontastic! Everything in the game was born with 2 modes: Walk and Angry... with brief lapses in said modes (there are some emotional moments) the game is consistently angry. But because of the AI's anger towards me it has provided me with some of thew best fights I've been through in a videogame. I would highly suggest playing it and yelling swears (and the occasional "FOOTBALL!") at your T.V.
