Out of the few that I've played, I'd say:
Soul Calibur (one of the best fighting games in history)
Sonic Adventure 1 & 2 (if you like games like Sonic, these are awesome)
Crazy Taxi (light, fast, arcade style driving)
Virtual On 2: Orartorio Tangram (awesome fully 3D mecha combat)
Vigilante 8 2nd Offense (still one of the best car-combat games ever)
Soul Calibur runs good, although the menus can be messy. You should look up instructions on getting Sonice Adventure 1 working right, and I think SA2 requires an ATI video card to function properly throughout the whole game (might be old info, though). Crazy Taxi works fine. Virtual On 2 might need the utopia boot disk as well. V8 2nd Offense has slightly garbled menus, but should work just fine.