Made a few match types in Brawl. We have the tag match, 1v1 and when one guy goes down, his partner takes over. Then we have what is called "Guardians" mode, Snake sits on a high area and bombs the 2 guys fighting in the pit below untill one is eliminated, then we see how long the survivor can withstand Snakes head-on assault.
There were quite a few Halo ones, favorite being Pirates. It was infection, but hte survivors had to drive an Elephant around the sandplace (don't own teh game, don't know the name) while the infected has to cut them down. Swords only for the zombie pirate. Shipmates get a sword and shotty along with the "ships" cannons.
In most racing games with damage, me and a friend have demolition derbys on an open area of the track.
Speaking of that, me and my bro did a coreographed car-chase scene in Flatout. Took quite a few takes, but we got it. Wasn't worth the effort since there is no replay saving.