Re: How easily do you recognize Trek actors w/out makeup?
During TOS' original NBC run, I was watching a daytime game show (apparently "You Don't Say" in 1967), and Leonard Nimoy was one of the guest contestants. He looked a bit odd, as he still had the Spock haircut and sideburns, but it wasn't as heavily lacquered as on ST. And his eyebrows looked really strange, because normal curved brows were drawn in with eyebrow pencil. I don't remember if he wore eyeglasses. There's probably a clip floating around somewhere.
Dr. Howard, Dr. Fine, Dr. Howard: For duty and humanity! --Men in Black (1934)