Baring the normal antiaerosocial misbehavior, I have seen the trashbag carryon "suitcase" (dropped in a F-class locker while the traveler went to the back of the plane, naturally), and a first timer who really totally freaked and had to be talked down (to her seat) but no Times Square caliber stuff.

I think we've all seen annoying behavior. But thanks to the cost of air travel, preemptive FAs, and perhaps the understanding that the only way out gives you a 30,000 ft first step straight down, keeps the freaks out of the picture or otherwise keeps their inner weirdos in check. We so rarely see white coat and butterflynet material, just "Passenger 1A/DYKWIA", the grandma who's flying for the first time who tells you about all her operations, little Braeddyn's first trip to Disneyworld and in the old days, hijackers.

For for all the rest there is interstate bus service.

And we flyers are no doubt all the more poorer for it.