I'm not sure if it's considered vintage, but here's my baby. She's a 1994 (I think....that's when I think I bought her!) Schwinn Sidewinder. I've never used her as a mountain bike, just on trails, streets, etc. The only changes I've made are the bottle cages, pedals, rack and the British Racing Green Brooks B-17 Champion Special Saddle with copper rivets. The saddle kind of adds a touch of class, don't ya think?
These days, I ride her, still on the streets and trails, but with two angels in tow in the Chariot Caddie that you see. This bike has always just fit me, and it still does. It's a great bike (from the days when Schwinns were sold in bike shops exclusively....<big sigh>)!