Rick Mercer Report
One of Canada's favourite comedians kicks off an hour of comedy in this season premiere. Known for his hilarious rants, Rick Mercer takes his cameras on the road to collect opinions from Canadians. Later, tune in for the season premiere of 22 Minutes. CBC, 8 p.m.
Convinced he knows who the arsonist is, Lt. Severide searches for proof to back up his suspicions in this new episode. Elsewhere, Mouch gets some campaign help from Isabella (guest star Mena Suvari). NBC/Global, 9 p.m.
The Biggest Loser
Fifteen overweight participants set out to lose weight and adopt a healthy lifestyle with the help of trainers in this season premiere. This year's contestants include former American Idol winner Ruben Studdard and Olympic weight lifter Holley Mangold. NBC, 7 p.m.
Jay Leno: Billy Crystal
David Letterman: Seth Meyers, Michael Fassbender
Jimmy Kimmel: Elton John, Emily VanCamp
Craig Ferguson: Sarah Michelle Gellar, Guillermo Diaz
Jimmy Fallon: Miley Cyrus
The Daily Show: Malala Yousafzai
Conan O'Brien: Lisa Kudrow, Diego Luna