WHAT HAPPENED NEXT!!!

Brutal DOOM is a mod for the DOOM source port GZDOOM, and it is frickin awesome. It's been around a few years but it was news to me and several other posters in the venerable "What [not shmup] game are you playing now?" thread, so I thought I'd give it a shout here. Besides jacking up the gore and sense of sheer destructive power to unspeakable levels, it also makes several alterations to weapons, physics and enemy behaviour resulting in more robust action and a more extreme vintage DOOM experience. If you ever wanted a Baron to rip a zombie's head off and hurl it into a stack of exploding barrels, this mod will perform!
Mod download: http://www.moddb.com/mods/brutal-doom
GZDOOM wiki link: http://zdoom.org/wiki/GZDoom
Not linked here but required: WADfiles for the game you want to play (DOOM, DOOM II or Final DOOM)