One of the most famous dances ever done for the cinema is the "Moses Supposes" number from Singin' in the Rain — which, by the way, is frequently misspelled as Singing in the Rain. That bothers me way more than it should.
Originally, of course, it was danced by Gene Kelly and Donald O'Connor. Here, a large chunk of it is re-created by dancer Derek Hough and an animated Donald O'Connor created by animator Norbert Torok. I don't know which of them had the tougher job, Hough or Torok…
