I just purchased a Trek 4300 alpha (my first mountain bike) a month back for my birthday. It's a fantastic bike, and I use it mostly for urban riding. Getting back on a bike after a few years and riding almost daily has been incredible in getting me back into shape. I'm hoping to make some new friends and learn more about the sport and also how to take care of my bike.
My previous bike was a Schwin hybrid, purchased in 1998, which I enjoy riding when I'm visiting my folks in Tennessee.