Other mistake: Preacher has a large bold tattoo at the center of his chest below his neck that changes repeatedly. For example, it's dark and clear when they capture the deputy, but it's smudged and partially gone when Preacher forces Stella, the deputy, and Ralph into the 18-wheeler. (00:29:10 - 00:36:50)
The Greatest American Hero (1) - S1-E1
Continuity mistake: In one scene, Ralph is in a phone booth desperately trying to make a phone call. Ralph is nervous and panicky. But when you look at his reflection on the phone, you can see a big relaxed smile on him. When it cuts back to him, he is still acting nervous and panicky.
Bill Maxwell: And so we went to NewFOUNDland to make friends with all the whales and a bunch of little fishies.