Speaking of glitches... How about the MW3 Glitch: MP Invisible God Mode/Invincible Glitch...
__________________ "We've made many compromises already, too many retreats. They invade our space
and we fall back. They assimilate entire worlds and we fall back. Not again. The line
must be drawn here! This far, no farther!"
~ Capt. Jean-Luc Picard, USS Enterprise (NCC-1701-D).