Get off of TF2 and come play Brozen Synapse with me.
This game is pretty sweet.
http://www.youtube.com/watch?v=BOlV_9DYnOw
You get a bunch on little bros, and your opponent gets a bunch of little bros.
You move your bros all over the randomly generated map in the hopes of getting the jump on your opponents bros. You plot out your little 5 second plan for each dude and then your opponent does the same. when you both have your plan the game plays both scenarios at once. There's a capture the flag type mode, a territory control mode, a hostage rescue mode, and straight DM also (ibby might be able to handle this one).
When you buy the game for $25 on steam you get an extra copy to gift to one of your real life bros. Shit's a lot of fun. I highly recommend it.
For the bros that have real life bro things to do there's also excellent news!
You can start a game and "pause" it for a long ass time. SO, you can start a game with a real life bro, plot your turn, he'll plot his turn too. But let's say your RL bro is slow as fuck from all the natty he was shotgunning or you had some babes to go stick your wiener in... NO PROB! You can come back like next week and select the game and continue it at your leisure! You can have multiple games going at once too! Fuckin sweet bro!