So You Think You Can Dance : The TV series presents its latest Dancing with the Stars Season 6 Episode 21 "The Top Eight Perform" is realese on 8 December, 2009.

TV Series : "So You Think You Can Dance"
Starring : Cat Deeley, Nigel Lythgo,
Genre : Reality-TV
Air Date : 8 December 2009
More Information : IMDB, TV.COM

So You Think You Can Dance Season 6 Episode 21 Synopsis :

The reality show "So You Think You Can Dance participants perform a particular style of dance each week with a partner. The audience votes for their favorite couple leaving the 3 couples with the fewest votes, to disposal. After each dancer performs a single of his choice of judges, a man and a female participant, is available.

So You Think You Can Dance S06E21 Video (YouTube)