For some reason this morning I was thinking about a rather funny thing that happened to me when i was at an arcade in my youth.  I was playing Super Zaxxon at a local restaurant that also had a small arcade room (10 games or so) and during play I was about to hit a wall so I tried to pull up hard to get my ship over it...Well, the Zaxxon control stick popped off and I ended up drilling my forhead with the stick.  LOL.  Not only did it nock me on my arse, but I had a huge goose egg.  Didn't knock me out, but gave me a concussion.  Now thats interactive gaming!  Anyway, just thought I share.
Anyone have any similar or better arcade horror stories?