http://www.youtube.com/watch?v=i-jle3IsicI
In 1958, an ultra-low budget sci-fi flick was released called The Brain Eaters which featured Earth being invaded by alien creatures that looked like fuzzy slippers with antennas. At the end of the film, the alien leader is revealed and it turns out to be an unrecognizable Leonard Nimoy behind a long white beard. It looks like this clip was taken from an AMC broadcast of the movie, so it’s hard not to laugh at the plug for the season premiere of Mad Men that pops up in the bottom left-hand corner of the screen.
Cheap plug alert: if you’ve ever wanted to see footage of Leonard Nimoy and a talking rock demonstrating laserdiscs together, check out this Cracked article I wrote.