I'm very happy I lived far enough from a movie theater (or thee-ATE-er, as the first ad would have it) that I never got dragged off to see any of these horrors (or those incredibly creepy Swedish Pippi Longstocking epics, for that matter) when they appeared at heavily-advertised regional kiddie matinees. Just seeing these commercials when they aired during Duane & Floppy was bad enough. I still have Magic Christmas Tree-related trauma, and I've never even seen the damned thing.
Watch these and shudder, and just try to have a Merry Christmas.
