There are a couple of scary stories here. I've only been stuck for 10 minutes or so a few times. I can't even remember where.
I remember 2 narrow misses though.
One time at Park City the gondola stopped just a car or so after I got off. My best friend was still on the line, near the top. It was windy as hell. Snowing, blowing, thunder, lightning! A big bolt came down and hit a power line somewhere and everything just stopped. They were stuck there, in the raging storm, for over an hour.
Number 2 was at Kirkwood on a beautiful, sunny, Sunday afternoon. We were skiing down from the top and noticed that we seemed to have the mountain to ourselves. Looking around we could see that every lift in sight was stopped. We headed for the lodge, which was packed. They got the power back on about an hour later.