I hate it when other passengers exist.
That being said, I especially hate babies that apparently have the intercom transmitter, because they seem to be emitting their blood-curdling shrieks OVER THE LOUDSPEAKERS as well as from the seat behind me.
I also have a particularly strong disdain for boring people saying boring things loudly over the course of a long flight. "Martha likes pineapple upside-down cake. "Martha does?" "Yes. She says Stuckeys has the best." "The pineapples are on the botom?" "Yep. Right there on the bottom. She buys them at Stuckeys." "Martha does?" etc.
Another favorite target of my vitriol is the Visitor. usually a tall, skinny bearded guy, he's sitting in a diferent row than his family/acquaintences, who are near me. To cope with the time spend apart from these folks, he repeatedly shows up at their row to engage in lame jokery and inane chatter, blithely blocking the aisle for food/beverage service and people who have to take a whiz.
I could go on, raving angrily about:
Captain Constipation, the stinky lav-camper
The Glutton (who orders something from the flight attendant each time she walks by, so she never gets to me)
The Eyewitness, who jumps from row ABC to row DEF in order to make sure he doesn't miss ANYTHING that might pass by on the ground
The Pack Rat, who, over the course of a flight, needs to remove and fiddle with everything in his or her stowed bag, one precious extraction at a time
The Schoolhouse Rocker, determined to redefine the term "elbow room."
My most annoying experience ever, though, was on a ShuttleAmerical Dash 8-300. Two high-powered business types (a man and a woman) were having a high-powered business discussion in the "passenger terminal" at Boston's Hanscomb Field, apparently revelling in the fact that their high-powered importance was audible to everyone in the lounge. We boarded, took off, and although they were sitting near the tail and I was in the first row, I could still hear them "Dialoguing" OVER THE SOUND OF THE TURBOPROP ENGINES all the way to Buffalo. I hadn't thought that possible. -Mark
"Sympathy is something that shouldn't be bestowed on the Yankees. Apparently it angers them." - Bob Feller