Stimpy, I'm going to have to get on one of your flights! We've had the opposite experience...LOTS of "inflight entertainment" by fellow passengers when we used to fly ATA, but mostly very calm flights on SW. There was one that was delayed multiple times, had a gate change, and then had us get off the plane because a mechanical issue arose while it was taxi-ing. But even with all that, the passengers were remarkably calm. The only excitement I've seen on SW so far, other than a shipment of Sea World animals, was a man so dirty and smelly that they had to make him wash and change clothes in the lav. But they handled it very discretely, and he didn't make a fuss.
My husband saw a raging drunk last time he flew SW alone, but they were filming the guy for "Airline" so they were egging him on.
Barb