What's On: Sammi Receives the Harlot Letter

What does Sammi do after Snooki and JWOWW give her valuable information about her horseplayin' housemate Ron Ron? We find out on tonight's Jersey Shore. Elsewhere on the tube: Project Runway gets intense, Big Brother gets results, and M. Night Shyamalan thrills you in the dark.

Big Brother [CBS, 8 PM]

Another houseguest hits the road. Matt and Enzo are both on the chopping block, but I have the feeling that self-described genius Matt, who told the house he needed to pay for his wife's "medical expenses," is so out tonight. Cut the Jonny Fairplay tripe, sir.

Project Runway [Lifetime, 9 PM]

Finally, a team challenge. The twelve remaining designers split into two squads to make collections that accommodate recent hair trends. Warlord Gretchen is sure to infuriate everyone, including -- here's hoping -- a teammate like frail AJ.

Jersey Shore [MTV, 10 PM]

Sammi confronts Ronnie after she reads the oh-so-anonymous letter from JWOWW and Snooki. (M)ike, (V)inny, and (P)auly bring two pairs of girls to the house, and both pairs don't know the other is there. Yep, it's a trope right out of Boy Meets World. Thanks, MTV.

Unbreakable [AMC, 10 PM]

M. Night Shyamalan's follow-up to The Sixth Sense enters a really rainy world where Bruce Willis gains superhuman strength after surviving a train wreck. Samuel L. Jackson is sufficiently creepy, and yes, prepare yourself for the twist ending.