What's On Tonight: Smackdown, Hannah Montana, Painkiller Jane

• At 8, FOX has a new Are You Smarter Than A Fifth Grader, then a new Nashville.
• The CW has a new Smackdown! at 8.
• PBS has a new NOW at 8, followed by new episodes of Washington Week, Bill Moyers Journal, and Expose.
• There's a new Cory in the House on Disney at 8, then a new Hannah Montana.
• The N has a new South of Nowhere at 8.
• Also at 8: Sci-Fi has a new Doctor Who, then a new Flash Gordon and the series finale of Painkiller Jane.
• At 8:30, Nickelodeon has a new Avatar: The Last Airbender.
• Animal Planet has a new Meerkat Manor at 8:30, followed by a new It's Me Or The Dog.
• At 9, Discovery has a new Survivorman.
• VH-1 has a new Best Week Ever at 9.
• At 10, E! has a new episode of The Soup.
• At 11, HBO has a new Real Time with Bill Maher.

Check your local TV listings for more.