It’s one of those situations where you anticipate something amazing—like walking into an enormous buffet with every food imaginable—but what you end up with is a bad feeling and a hefty bill. That's how I felt about 'Death Warmed Up', from the Mill Creek collection of 50 horror films that I've come to know so well. There are some intriguing concepts here, and an agreeable, though old-fashioned, sense of mood, but dir…