Headless Horseman (2007)
Headless Horseman is a film that aired on the SCI FI Channel in October 2007, based on the legend of the Headless Horseman. The movie takes the tack that the Washington Irving story was the "white-washed" version and the events in this horror film is the real story. It stars Richard Moll and Billy Aaron Brown and is directed by Anthony C. Ferrante.
More at Wikipedia.