Rookie Blue, Project Runway, and Futurama

8 p.m., CBS

Big Brother

Another houseguest is evicted tonight! Here's hoping it's Enzo.

9 p.m., ABC

Rookie Blue

Andy (Missy Peregrym) and Swarek (Ben Bass) try to prove Andy's father innocent after they come across evidence that implicates him for murder. Plus, a vigilante wearing a cape robs Chris (Travis Milne) and Dov's (Gregory Smith) squad car.

9 p.m., LIFETIME

Project Runway

The designers are tasked with re-working old bridesmaid's dresses, which might be the most useful Runway challenge yet.

10 p.m., COMEDY

Futurama

In the 100th episode, Leela's underground army faces the surface people in a fight for mutant's rights. Plus, the band Devo has a cameo! Whip it good.

11:35 p.m., CBS

Late Show with David Letterman

Dave welcomes the man of my dreams, Will Arnett.

Also on the airwaves...
American Chopper: Senior vs. Junior, 9 p.m., TLC
Ace of Cakes, 10 p.m., FOOD
Stan Lee's Superhumans, 10 p.m., HIST
Jersey Shore, 10 p.m., MTV
BBQ Pitmasters, 10 p.m., TLC
Family Style, 10:30 p.m., FOOD

What are you watching tonight?

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Follow TV.com writer Stefanie Lee on Twitter: @StefAtTVDotCom