Okay, Michael Beck wasn't in Skatetown USA (though it sure looks like him at 1:25), but he's about the only 1979 B-lister who wasn't in this, "the greatest story ever rolled."
Check out this cast list: Chachi! Horshack! Marcia Brady! Mary Ingalls! The Unknown Comic (under his real name, Murray Langston)! Flip Wilson! Laugh-In's Ruth Buzzi! Midget Billy Barty! Dorothy Stratten as "Girl at the snack bar"! And making his major motion picture debut... Patrick Swayze!
How can this not be out on DVD yet? Columbia Pictures, Xanadu the right thing!