Does work rage count where my keyboard saved me from punching a colleague? The "esc" key is missing to this day...
Gaming wise, as a coffee addict, there is always coffee next to my keyboard, which inevitably had to spill on my keyboard. After repeated cleaning and drying, my "w" key got stuck now and again, and as I mainly play FPS games this was quite annoying as it would get stuck at the worst times of course - as Murphy would have it. This included (but was not limited to) driving off of cliffs, failed sneak attempts (a lot), walking into enemy invested rooms/areas (after releasing the key at entrances of course), and just walking in general, lots of walking...