Streets of Rage Toejam and Earl Splinter Cell co-op parts X-Men 1 and 2 for Genesis X-Men Arcade Battletoads Teenage Mutant Ninja Turles Arcade, 3, Turtles in Time Sniper Elite The Mario/Yoshi game where one person controls Yoshi and the other uses the SNES gun Gears of War Halo Aliens vs Predator Arcade Spider-Man Separation Anxiety Metal Gear Online can be ridiculous if teams do things together Probably Batman Arkham Origins
I mean I could keep going.
EDIT: Just to be clear, this list adds on to MK. RE5 isn't close to being the best.
I realize it doesn't speak for the whole experience, but for me it's one of the worst for a first playthrough.
At the end of a night-long split-screen session with a friend, we quit just before the final boss. When he came back to it solo the next day, we both realized that all of the weapons I picked up as Sheva (most of them) were not usable on his profile and that weapons couldn't be traded. So he had like, a handgun and maybe a sniper rifle at the end of the campaign.