A look at tonight's sci-fi TV:
Dollhouse, "Hollow Man" – The end is near for Joss Whedon's latest mindfrack, but there's still a lot to learn about our favorite Dollhouse denizens. Everyone's backstory is finally revealed tonight as Echo and the team rush to Arizona to take out Rossum's mainframe computer. And things get tense when Echo confronts Dr. Whiskey Saunders. (9 p.m. ET on Fox)
Sanctuary "Kali" - Sanctuary's double-sized season ender (already?) finds Magnus fighting a major threat to all abnormals while Will is struck by visions connected to a dangerous cult. Also, we're told a giant lizard monster might cust loose in Tokyo! (Two episodes starting at 9 p.m. ET on Syfy)
Batman: The Brave and the Bold – Before heading to Smallville, the Justice Society of America drops by the Batcave to help ol' Bats defeat baddie Per Degaton. JSA members slated to appear include Hawkman, Wildcat, Hourman, The Flash and Dr. Mid-Nite, with special guest Black Canary! (7:30 p.m. ET on Cartoon Network)
Head after the jump for clips and more TV picks.