I've got one.
I was going to new york for a christmas vacation departing from the ontario airport ( california, not canada ) And normally they would hand inspect my film ( this story is much like shutterflower's ) but not only did they run it throught he xray machine TWICE, they proceded to open each and every box, unwrap each roll of 120 and basically ruin ALL of my film. ( there was a good 40 rolls or more, a mix of neopan ( 100/400/1600) and Fuji slide film.), and they were rather rough with a bag containing my Mamiya RZ ( thank god that thing was a tank) and my Eos 3 bodies. however, In efforts to hope for the best i continued to shoot each roll on the trip hoping that i would get some of the shots ( this was before i had a digital camera ) . upon the continuation of our trip, we decided to go into the empire state building. and LO AND BEHOLD, yet another metal detector and yet another xray machine. so now. for the third time, my film has been run through an xray machine, because the people are just too damn lazy to take a quick look and realize that its JUST FILM!!!.
i still tried to develop the rolls, and did a lot of pulling in the processing. i was able to salvage some of the shots. but at least 75% or more of all those rolls were lost causes.
i was not a happy camper.