By Cheeky bum-lookers

SCOTTSDALE - There's a certain coffee girl Charlton Heston hasn't forgotten from the 1960s.

The 74-year-old actor was asked Monday at a book-signing whether he regretted baring his rear end in the 1968 ''Planet of the Apes.''

''No,'' he said. ''Actors have the modesty of mice. In summer stock, you're always changing your clothes in the wings. Of course, what you do when you're naked is another thing.''

Heston found the experience fun.

''While my back was turned,'' he recalled, ''I heard one of the coffee girls behind me say, 'Oh, nice buns!'''