Ok, at least this has got to be top 10....
Literally did a double take when I saw this gentleman walk into the lav with bare feet. Wish the photo was better but didn't want to use the flash.
(I also have to acknowledge that this picture also provides photographic evidence that I purposely chose 21A on a 763, putting me in direct proximity to the lovely odors of the aforementioned lav... but I like the space.)