I'm more into Machinima film making than game modification but I can model, rig and animate for the Source engine. I might also to start using other engines soon depending on their modeling support. Not much else to say really.
An intriguing, entertaining and quite insightful idea bought to life with brilliant voice acting. There's little in the way of eye candy and it's not particularly technically advanced but it will make you think and frankly that's a lot more than most games, let alone mods can do.
Quite simply I love it, it's one of the most original concepts for a game I've ever played.