The Carrie Diaries
The CW-network series chronicling the pre-Sex teen years of Carrie Bradshaw's life continues with Express Yourself, in which Carrie and Walt's new roommate makes herself a bit too comfortable. Elsewhere, Samantha offers Mouse some sex tips. Citytv, 7 p.m.
What Would You Do?
A team of actors create difficult circumstances for unsuspecting bystanders in this new episode. Regular people are put to the test as scenes featuring moral and legal dilemmas ranging from abuse to theft are played out. John Quinones hosts. ABC, 8 p.m.
Actress and comedian Jenny Slate makes a guest appearance in this new episode. Talk-show veteran Joan Rivers joins Giuliana Rancic, Kelly Osbourne and George Kotsiopoulos to comment on and critique today's best -- and worst -- fashion. E!, 8 p.m.
George Stroumboulopoulos: Raffi, Meaghan Rath
David Letterman: Hugh Jackman, Elvis Costello
Jimmy Fallon: Dave Chappelle, Body Count
Craig Ferguson: Max Greenfield, Ben & Ellen Harper
Seth Meyers: James McAvoy, Wendi McLendon-Covey