So You Think You Can Dance (8pm, Fox) - The Top 20 dancers are introduced.

Jimmy Kimmel Live: Game Night (8pm, ABC) - Kimmel's guests for tonight's pre-NBA Finals show are Ron Artest, David Arquette, and Usher. The actual game (game 5) starts at 9 p.m.

Known Universe (9pm, National Geographic Channel) - Engineering in space represents the future of human civilization, but also poses some of our greateste technical difficulties. Tonight the show visits NASA's tool lab for a look at equipment used to build in space, from high-tech wrenches and hammers to a robotic handyman name Robonaut. Also, scientists discuss building a skyscraper on the moon.

Swamp People (9pm, History) - Liz gets her own boat and sets out to prove herself to Troy. Also, Junior lets Willie hunt solo, an alligator attacks R.J. and Jay Paul's lines, and feral hogs cause trouble.

CMT Music Awards (9pm, CMT) - If you missed it last night, it's on again tonight. Scotty McCreery presents, and Keith Urban and Lady Antebellum perform.

Love Bites (10pm, NBC) - Almost surprised this made it to a second show (the first one was that bad). Tonight, Annie's pal (Michelle Trachtenberg) resorts to being best friend to her commitment-shy flame, and a young man (Skylar Astin) takes up knitting to impress a woman.