Pick of the day.
Strictly Come Dancing - It Takes Two (6.30pm) Analysis of the pro-celebrity couples' progress ahead of tomorrow night's show, with Claudia Winkleman reporting from the rehearsals.
Paul O'Grady Live (9.00pm) The host is joined by actress Julie Walters and singer Katy Perry, who sings her new single Firework, and there is a performance by dance troupe Diversity. Last in the series.
The Event (9.00pm) As the biological threat intensifies, the White House and the Director of National Intelligence face problems in their negotiations with Thomas. Elsewhere, FBI Agent Collier closes in on Vicky and Carter. Drama, starring Clifton Collins, Taylor Cole and DB Sweeney.
The Mentalist (9.00pm) The case of a murdered jockey leads Jane and the team into the murky underworld of horse racing, where they uncover a number of suspects. Crime drama, guest starring Jim Beaver and Olesya Rulin, with Simon Baker and Robin Tunney.