Oh yea. Its my primary hobby. I mostly road bike and race, on a Jamis Comet. Its a sweet rig, and is super sticky in fast descents and great for Criteriums. Full Ultegra double, Ksyrium Elite wheels, Mich. carbon comp tires, its a sex machine!
On top of that, I mountain bike when I can, that bike is a Jamis Dakar Sport, with an upgraded air shock.
Oh, and I have a cyclocross bike. Surly Crosscheck, Bontrager wheelset, mixed road components. I race 'cross when I can, but mostly use it for an all purpose and commuter bike.