Walter Koenig had to wear a shaggy toupee in his first season as Chekhov in Star Trek until his real hair grew out. Reportedly, his mop-topped character was modeled after The Monkees singer Davy Jones in an attempt to lure teenage viewers.
DID YOU KNOW? Marlon Brando hated memorizing lines so much that he posted cue cards everywhere to help him get through scenes.
He even asked for lines to be written on an actress's posterior. (That request was denied.)