Yeah, nice idea, but most people would never recognize one from DKC2. :p The Final Fantasy one is pretty well known, though. Here's the one from FFVII: http://www.youtube.com/watch?v=-YCN-a0NsNk&feature=related
Could have the pre-boss battle music from the Mega Man games before a fight, too.
http://www.youtube.com/watch?v=7iBuhnyaNpY
And here's the fanfare if you win: http://www.youtube.com/watch?v=fjKsh3pIgmg&feature=related