Been spending the last two days rigging a model for a friend 'Mike Doig' intended for use within a game engine. Got the Rig up and running and was quick to test it in the UDK, all seems to be fine (touch wood). Might add some extra controls to the rig later on next week based on my meeting with Mike Tomorrow, but for now it's a wrap. Anyhoo here are some screen grabs of the model in the UDK and Maya.
You can download the rig from my site if you fancy a play around,