|Goodies, The-A Tasty Second Helping||R2UK|
This release isn't available in Region 1.
As outlined in the posts below, the Region 2 release contains a colourised version of the monochrome Come Dancing episode and an additional featurette about the colourising process. Having not seen the colourised version I can't vouch for its realism, but it would be interesting to see. The Region 2 package also includes a booklet.
Be sure to shop around if you want to make a purchase.