"Harry overtook the stairs like an oiled gazelle."

http://www.youtube.com/watch?v=HPVhmZodaLA

http://www.youtube.com/watch?v=qIRbbeds91c

http://www.youtube.com/watch?v=y0bP78379ag&NR=1

Watch these immediately. I linked to the best, but watch all of them. None will disappoint.