I'm 34 and have a pacemaker
because of heart block caused by one of those ablation procedures for rapid heartbeat--one of those "unfortunate" side effects
I myself also had a recalled device from Guidant. My pacer was a Pulsar Max DR Model 1270. I am completely dependent on mine and my cardiologist strongly recommended replacement, so I got a new pacer in August, 2005. My new one is an Insignia Ultra though, hopefully not the same on recall mentioned earlier.