You Better Watch Out(1980)He sees you when you're sleeping, he knows when you're awake, he knows if you've been bad or good, so it's best not to get on his bad side. This quirky horror/thriller, that's gained a loyal cult following, stars Brandon Maggart as Harry Straddling. A man who was traumatized as a child, when late at night on Christmas Eve, he walked into the family living room and saw his father, dressed as Santa Claus, being naughty with his mother. Now grown to adulthood, Harry is malignly obsessed with the holiday season, particularly the myths of Santa Claus; he works for a toy company, he sleeps in a Santa suit, his apartment is stuffed with Christmas memorabilia, and he spies on the neighborhood children, keeping track of who has been good and bad. One day, Harry snaps, and after dressing up as Santa, he steals a truckload of toys and delivers them to a mental hospital as presents for the young patients -- all well and good. But when Harry is then confronted by a group of people who don't believe he's Father Christmas, Harry reacts with violence, setting off a murder spree. Also features Patricia Richardson, who makes her film debut in a small role more than a decade before she gained fame on the TV series "Home Improvement". Danny Federici of Bruce Springsteen's E-Street Band also has a cameo, as an accordion player at a community center dance. Though it's lesser known, it predates the horror film, "Silent Night, Deadly Night", in which a deranged man goes on a murderous rampage, decked out as Santa Claus.