My Shake It Off obsession reasserted itself just now:-

(The original Ms Swift video) (542,016,564 views since Published on Aug 18, 2014):-
http://youtu.be/nfWlot6h_JM

(Officer Davis lipsync) (28,586,576 views):-
http://youtu.be/8XFBUM8dMqw

But Taylor also did a series of "outtakes" videos, featuring extra from each of the sets of dancers in the main video:-

Video #1 - The Cheerleaders
Video #2 - The Ballerinas
Video #3 - The Modern Dancers
Video #4 - The Animators
Video #5 - The Twerkers and Finger Tutting
Video #6 - The Ribbon Dancers
Video #7 - The Band, The Fans and The Extras
Video #8 - The Director

---------
Alex Kemp