Sarah Lancashire is the face of Happy Valley as Catherine Cawood but who can forget her early days as Corrie's Raquel?
And she isn't the only person fans have found looks familiar in the BBC drama. For starters, it features two of the stars of classic 1987 comedy Rita, Sue and Bob Too.
Siobhan Finneran was 20 when she shot the film with George Costigan - and the pair went on to play Clare Cartwright and Nevison Gallagher in Happy Valley.