Re: How easily do you recognize Trek actors w/out makeup?
I was once watching the Sylvester Stallone/Kurt Russell film Tango and Cash
on cable, and this was a long time ago as I've not had cable in about 20 years. There was a bad guy sitting in a chair, and he looked and sounded very familiar but I couldn't figure out who he was. I recognized a bit of stage business he did when he tented his fingers in front of him while speaking. End credits revealed it was Marc Alaimo, whom I'd recognized from his TNG appearances (usually as aliens), before he became finger-tenting Dukat.
Dr. Howard, Dr. Fine, Dr. Howard: For Duty and Humanity!
--Men in Black, 1934.