The one that always makes me wonder is when the airline says "We're staring preboarding" and then people get on the plane. Ummm.. no... preboarding is when you're sitting at the gate waiting for them to open the door. Once people start getting on, it's boarding.

>I am reminded of an old George Carlin routine - he was told to get on a plane and he said ... well, an expletive I can't repeat here, and then "...I'm getting IN the plane. Let Evel Kneivel get ON the plane."