On TV this weekend
Ghost Adventures, 9 p.m., Travel A World War II fort that was the site of a massacre hundreds of years ago might be haunted. Good thing a seance will prove whether that's true or not.
Chasing UFOs, 10 p.m., NatGeo People in Arizona are reporting strange lights in the sky and think they're UFOs and not just sky divers with flares, as the military contends. People in Arizona questioning the government? No!
Common Law, 10 p.m., USA A crime novelist may have helped a criminal escape from prison. So that's where she gets all those ideas.
SEASON FINALE Louisiana Lockdown, 10 p.m., Animal Planet Forget the rodeo; one of the inmates is getting released. If he can survive the bull for eight seconds, that is.
Portlandia: The Brunch Special, 11 p.m., IFC An extended cut of the Season 2 finale sketch that was its own mini epic worthy of an hourlong special. Marionberry pancakes never tasted so funny.
30 Greatest NBC Olympic Moments, 8 p.m., NBC The network's eleventy billion hours of Olympics coverage begins … now.
SEASON FINALE Oddities: San Francisco, 9 p.m., Science Something about cobras. That should be worth it.
Todd Barry: Super Crazy, 11 p.m., Comedy Central Surprisingly, we are intrigued by a cynical comic who thinks the world is headed down the tubes. Who'da thunk it?
SEASON FINALE The Bachelorette, 8 p.m., ABC You folks haven't really seemed to care about Emily this season, so the two dozen or so of you left watching this can flip a coin between the guy from Utah and the race-car driver.
Teen Choice Awards 2012, 8 p.m., Fox High-pitched screaming and Justin Bieber are assured. Those two things are not mutually exclusive, obviously.
— Joshua Gillin [email protected]