But eagle-eyed fans have spotted a trend when it comes to the type of celebs producers recruit year after year.
And this year is no exception.
From the soap siren to the ageing comedian and the 'single ready to mingle', Strictly pays homage to its 'tribes'.
It's clearly a winning formula, as millions of viewers consistently tune in every series.
Here we reveal the typical tribes – and how this year's array of celebs fit in.
Stick them on your channel's flagship show, of course.
This year ex-Corrie star Ellie Leach is the broadcaster's 'pet project'.
Bosses are said to be so sure Ellie will be a hit on Strictly that discussions are already underway about her joining BBC One drama Waterloo Road.