Strictly Come Dancing leads a host of dance shows on to the floor

From documentaries to talent contests, the hit has paved the way for a gentler series of programmesIt introduced a generation to ballroom dancing, had households across Britain debating the finer points of the rhumba and the cha-cha-cha and this year has made a national hero out of Ed Balls, whose cheerful willingness to perform outrageous routines to everything from Gangnam Style to Great Balls of Fire has made him more popular than any serving politician. Now Strictly Come Dancing’s infl