I got an early '90s Giant Iguana 21 speed that I got from a pawn shop for $145. We fixed it up, now it's a great bike.
I have Rock Shox, a Trek Speedo, I have gone through 3 sets of tires(sorry, but I like to do gravel burnouts a lot, makes me feel like my bike is really fast), a set of brake pads(I like doing endos a lot), some brake and shifter cables, handle bar grips(wheelies tear them up), and a seat(cause when I first got it, I crashed a lot).
I am waiting for snow to come so I can ride in the snow, it's always fun when you're going 20 and suddenly have to turn, and wipe out on someones lawn.