Series 5 -2007
https://www.youtube.com/watch?v=kw-Td7Sz1ZI

Series 6 -2008
https://www.youtube.com/watch?v=eYx_YN1DU08

Series 8 -2010
https://www.youtube.com/watch?v=7ylIkL94NOc

Series 9 -2011
https://www.youtube.com/watch?v=LfV6-8v85t8

Series 10 - 2012
https://www.youtube.com/watch?v=7wDabE5V2Ds

Series 11 - 2013
https://www.youtube.com/watch?v=BkM-DsqdVFw

Series 12 -2014
https://www.youtube.com/watch?v=NsxAwvxLwKQ

Series 13 -2015
https://www.youtube.com/watch?v=J3CEn92Gx-4

Above, the inaugural pro/celeb dance of each year since 2007 to present is listed.

Of these, which is your favourite from an all-round viewpoint (eg: performance, choice of song, choreography etc) and why?

(PS: I have listed Series 7 in the poll in case anyone else finds and posts it )