"Doctor Who" is, quite simply, the culmination of all human storytelling up to now—it is the ongoing saga that has successfully digested all other existing story structures.
If you were able to take the very best things about the greatest buddy-cop teams, blend that with the cream of campfire ghost stories and then throw open the doors of possibility—you'd have only the jumping off point for "Supernatural".
"Sleepy Hollow"s strongest element is absolutely the man-out-of-time/fish-out-of-water dynamic of Ichabod Crane as he's forced to face off against magical monsters tied to the American Revolution each week.