When Sheen puts his head on his body, he gets it on backwards and it stays like that for awhile, but when Jimmy explains about the alternate dimension to Spamdini, Sheen calls out, "Nap time!" and his head is turned the right way. Afterward, Sheen's head is turned backwards indefinitely.
Sheen's hairstyle alternates between shots, especially while acting obnoxious on stage. For example, he yells, "Just pick Betty and get it over with!" and his hair is how it usually looks; then in the following shot it is styled to appear shorter and more flat.
"One of Us" starts en medias res with Jimmy & Cindy running away from many townspeople who fell victim to the hypnotic TV show. Here they are shown running in the street, but once the flashback catches up to this spot, they are running on the sidewalk.