My personal fave was the middle aged bald guy with the overly madeup, obviously plastic surgery-enhanced girlfriend/trophy wife/well-paid call girl who sat next to me on a flight once from Chicago to Boston.
From the time they boarded she would not shut up about how she'd never flown in coach in her life! She couldn't believe they had no more seats left and how she thought she would rather die than be there.
She couldn't find a place to put her camel hair coat (described loudly), or her Louis Vuitton garment bag so she would put the coat in the overhead bin but was CONVINCED she would get oil or some muck on it.
Then she proceeded to talk about how crammed it was in coach and how she was getting claustrophobic and how she was going to take some pills to "take the edge off". Then ruffled through her pharmacology bag/purse and downed something with her wine she had ordered.
Her boyfriend/husband/john just looked incredibly pained the whole time and when she tried to shove some pills at him he said, and I quote: "I don't have an edge darling".
Ironically I was on a heavily reduced fare flying in coach and was reading a very funny book by Dominick Dunne about the excesses & eccentricities of the rich. I almost busted up loudly several times during her tirades. Instead I raised the book up & smiled from behind it.
When the meals came, she said, dripping with sarcasm, "Oh, I can't wait to see what a coach meal looks like" and when my special meal was delivered (not for dietary needs but because I think they're better....less mass production) they both said...."Well how did you get that?". I smiled sweetly and told them I called ahead.

I truly had never witnessed such snobbery in rare form, and I grew up near some pretty wealthy people in the Bay Area. Incredibly amusing & TOTALLY ANNOYING at the same time.

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Regards-
Karen