I think the dumbest glitch ever is the character switch glitch for XBL and PSN versions of MVC2. Basically sometimes when you choose your team, the wrong character will show up on your team with the wrong voice and wrong moveset. At this point the game will actually become unstable and crash. I don’t think this is human reproducible, but something that the game just seem to do randomly from time to time.
MVC1 has a glitch where the game actually crashes and resets. I think it’s created by gambit and venom. If Venom throws gambit and then attempts to do his super, the game will freeze and then restart. I also have seen gambit shake out of the web, but the screen becomes discolored. (check out NKI VIII for the glitch, also appears and K2O and DA videos)
CVS2 throw glitch. I forget the details, but I think if you buffer in a super, and throw your opponent, but they break throw. I think they try to throw you BEFOREyour super comes out, and then you in turn break the throw attempt. In either case, this cause your super to slowly animate, and other unstable things.