What's On Tonight: Ghost Whisperer, Smackdown, Battlestar Galactica

• ESPN has NBA Playoffs all night.
• At 8, CBS has a new Ghost Whisperer, then new episodes of Moonlight and Numb3rs.
• ABC has the special 20/20: Secrets of the Sistine, followed by new episodes of Duel and 20/20.
• The CW has a new Smackdown! at 8.
• Sci-Fi has two new episodes of The Sarah Jane Adventures at 8, then new episodes of Doctor Who and Battlestar Galactica.
• At 9, NBC has a new, two hour Dateline.
• Discovery has a new Man vs. Wild at 9.
• VH-1 has a new Best Week Ever at 9.

Check your local TV listings for more.