Jack Bauer will be joining Jonathan tonight – or Kiefer Sutherland as he's also known.
He will talk about filming the new series of 24 in London.
Will Kiefer give away any secrets?
Also on the couch are Chris O'Dowd, who's got a new movie to promote – Cuban Fury, and Emily Mortimer will be talking about her latest project for Sky Living – Doll and Em.
Comedian Kevin Bridges completes the lineup.
And John Legend will be performing live in the studio.
The Jonathan Ross Show, ITV, 9.55pm