Dr. Who Sells Computers
Here's a treat -- in 1980, Prime Computer (aka PR1ME Computer if you were totally awesome) hired actors Tom Baker and Lalla Ward (then playing Dr. Who and Romana on the BBC's Dr. Who series) to promote Prime Computers in TV ads. Below is a video compiling all the ads. Dr. Who was a particularly apt early-80's computer salesman, given the series' kitchsy mix of high- and low-tech.
Note the tagline: "Step Into the 80's!"