SFO for me as well. Most stupid announcement is on the Airtrain. As the doors are closing: "put luggage cart parking brake to on". That comes on at every single stop, which is like 5 or 6 times on the way to the rental car centre. They only do it in English but it still drive me nuts.

I was laughing when reading the previous posts about the moving sidewalks announcements in O'Hare's tunnel. It's true that you have this weird echo coming from differing directions as you near the junctions. The neons just add to the twilight zone ambience.