I made this request before, long ago, but I've given it some more thought.
The request was for a rock version of the Guardian Legend Title. A great orchestral version by Russel Cox can be found right here on OCR.
After browsing all the great artists here, I think Sixto could really pull it off nicely!
And for some more great games that need a little remix love from anybody:
Rampage - music to bash cities by
Duke Nukem - Grabbag Theme or most of the level themes from Duke 3D
Silpheed (http://www.the-underdogs.info/game.php?gameid=982) - the story title, end title, and all mission themes are pretty good
Half-Life series - the Nuclear Mission Jam, Half-Life 1 End Titles, and Valve Theme come to mind
Team Fortress 2 (that could be very interesting )
Any game baring the Apogee's mark - already have some great Commander Keen ones here, but don't forget Biomenace; Alien Carnage/Halloween Harry, Monster Bash, Cosmo's Cosmic Adventure, Major Striker, Raptor: Call of the Shadows (got one here already), Death Rally...just to name a few
Just some suggestions.