The Mariner vs. David Hasselhoff
Kevin Costner's mutant anti-hero from "Waterworld" versus David Hasselhoff and his dreamy pecs from "The Spongebob Squarepants Movie".
1) Bare knuckle beach fight.
2) Ocean race to see who can get to Bikini Bottom first to return Neptune's crown to conceal his baldness. Both will have a harpoon and a dagger.