Ooooooh, YEAH! :-)
The ones already voted for which I'd agree with...
* Syndicate! Woo!
* Stunt Car Racer
* Sensible Soccer
* Alien Breed (one of the original top-down ones)
Other ones that I think would be good...
* Cannon Fodder (anyone reckon that this'd work as an FPS? Could be entertaining if it retained the comedy...)
* Alternate Reality: The City
* IK+
* Capital Punishment
* Alien Breed 3d2
/me wipes nostalgic tear from eye... :-)