Wow, I thought this was gonna be one of those very slow threads.
realkman666: When guns jam, they don't explode, Far Cry 2.
Actually they sometimes do depending on the gun and kind of malfunction. Surely Far Cry 2 isn't realistic in this respect and it's an absurdly frequent occurrence there but the idea of a gun exploding isn't actually absurd. I couldn't complain about this feature in the game. To me it was a legitimate exaggeration (just like the ridiculous healing animations).
Reminds me of another common gun-related irritating detail in games, though. In some shooters empty automatic weapons continue to make clicking noises in autofire mode if you pull the trigger (repeatedly until you let go of the mouse button) which is nonsense. The mechanism would have to be electronic or something which simply isn't the case for the guns you usually find in shooters with real firearms.
HiPhish: Now combine the two and make a war robot that fights with a sword and you've got me boiling on the inside.
The old RTS Metal Fatigue would have to be your nightmare, then.
justanoldgamer: This one also occurs in movies and on TV: Laser beams that are slower than real life arrows launched from bow.
I always pretend that it's actually not lasers and the characters just use the wrong word. :D