Rob Hubbard's International Karate, which is now available on the Wii's Virtual Console, by the way.

Martin Galway's Rambo theme...

and

his Yie Ar Kung Fu theme is sublime.

And here are two more from Hubbard- the opening theme to Commando and the the high score music. Oh, and here's a metal cover of the opening just for the hell of it.

I guess that's got the ol' ball rolling.