Not so much that I can find on Sam Shepard (n.b. correct spelling!), so just a quartet of images from across the decades. I fully expect to be derided for my offering-up of the first image, from 1983's The Right Stuff, as showing possible 'bulge potential'.
I sat next to Bill Pullman at a movie in LA in 1990 and tried to look at his bulge, but he had his popcorn there! He was even more handsome and charming in person -- we chatted for a bit and thought he was very handsome after that when I never gave him 2 looks before!