Wow
I had the pleasure of downloading this after reading the short story. What a piece of crap...
The short story was pretty good, however. It's not the best one in Night Shift, but decent nonetheless. For this reason I didn't care how crappy the film was, because it wasn't one of those Stephen King stories that sticks in enough to care if a film adaptation will do justice or not. Film adaptations of any Stephen King tend to be horrible for the most part, but the films I do suggest are Cujo, Salem's Lot (both versions were good), Maximum Overdrive (very good version of Night Shift's 'Trucks', written and directed by Stephen King himself), Silver Bullet (however completely different from Cycle of the Werewolf). The thing about Stephen King's works is that they are effective only when read, not viewed, so don't depend on films based on his works, they do no justice.
Cujo is still the scariest movie I've ever seen though.