I think it's more interesting to find movies or shows in which two (or more) Star Wars actors appeared together.
Billy Dee Williams and James Earl Jones starred together in a movie called The Bingo Long Traveling All-Stars & Motor Kings. It came out a year before Star Wars.
Carrie Fisher and Mark Hamill both had cameos in Jay and Silient Bob Strike Back.
Kenny Baker and Jack Purvis were in Time Bandits together.
Liam Neeson and Harrison Ford star together in K-19: the Widowmaker.
Can anyone think of more?