TONIGHT: Big Brother 12 is all new—and live!—as the fourth houseguest of the season is evicted. Also, new episodes of SYTYCD, Jersey Shore and Futurama, the season finale of Bethenny Getting Married?, a Shark Week special, and more!

8:00 PM

Big Brother 12 The fourth houseguest of the season is evicted. (CBS)

9:00 PM

River Monsters SHARK WEEEEEK! (Discovery)
The Real Housewives of DC Drama and materialism and Salahis, oh my! (Bravo)
So You Think You Can Dance One of the final four dancers is eliminated; Flo Rida performs. (FOX)
Rookie Blue A heat wave and a serial rapist cause major problems in the city. (ABC)
Burn Notice Michael poses as a hit man in order to protect a witness whose testimony is crucial to stopping criminal activity. (USA)

10:00 PM

Jersey Shore Sammi tries to find out what Ronnie really did at the club, but the roommates are keeping their mouths shut. Later, Pauly flips out at Angelina.
Bethenny Getting Married? Season finale? Post-birth baby shower? (Bravo)
Futurama Earth is overrun by cats, undoubtedly from deep inside Grey Gardens. (Comedy Central)
Boston Med A 58-year-old former firefighter undergoes surgery to remove a cancerous tumor in his colon, but must wait to find out if he'll require chemotherapy (ABC)

Who's on the Late Night Couches Tonight?

The Daily Show Akbar Ahmed (Comedy Central)
The Colbert Report Savion Glover (Comedy Central)
Jimmy Kimmel Live: Ice Cube, Melissa Rycroft, Saving Abel (ABC)
Lopez Tonight: Will Ferrell, Elisabeth Moss, Flo Rida (TBS)
Chelsea Lately Eva Mendes, Dan Levy, Natasha Leggero, Ben Gleib (E!)
The Tonight Show with Jay Leno: Mickey Rourke, Plain White T's (NBC)
Late Night with Jimmy Fallon: Denis Leary, Connie Britton, Titus Andronicus (NBC)
Late Show with David Letterman: Mark Wahlberg, dock diving dogs, Cory Kahaney, V.V. Brown (CBS)
Late Late Show with Craig Ferguson: Paris Hilton, Alex Dryden, Fred MacAulay (CBS)