Same here, though sadly no joints in our office. Even so, I can recall flinching when the lift doors opened - in Doom, something nasty was sure to emerge.
I'd like to add my voice to the comments that deplore plotting in FPS games. I enjoyed Doom I and II and Quake, so when Doom III* came out I expected more of the same, only better. What I got was a load of training routines, and boring plot-filler talks from NCOs. If I wanted that sort of thing I'd join the Army**.
* Pretty sure it was III - it might have been another number.
** Not to be taken literally.