The Borgified Corpse wrote:
John Ratzenberger seemed to pop up all over the place in the late 1970s/early 1980s. He has one line as a Rebel Alliances deck officer on Hoth in Star Wars: The Empire Strikes Back. He's one of the military guys tracking the nuclear missiles in Superman: The Movie. And he's one of the NASA mission control guys in Superman II.
All of those films were made in England. Ratzenberger was living there in the mid to late 70s. He got a lot of bit roles which called for American actors. Often military men.