Gossip Girl (8pm, CW) - Amy Heckerling directs this episode in which Blair has a bachelorette party and Nate gets more information on Blair and Chuck's car wreck.

The Bachelor (8pm, ABC) - Chapel Hill and Charlotte ladies are still in the fight! Tonight the gang goes to Park City, Utah, for some outdoor activities (Charlotte's Blakeley Shea pictured here on the far left) -- and lots of drinking and crying, of course.

Antiques Roadshow (8pm, UNC-TV) - The show starts a three-episode run in Eugene, Oregon, with a Ty Cobb-autographed memorabilia, an original "Rosemary's Baby" drawing by art designer Clem Hall, and a 1919 oil painting by Norman Rockwell valued at half a million dollars.

Alcatraz (9pm, Fox) - On the loose tonight: a child killer, who would kidnap his victims and return their bodies to their homes.

Being Human (9pm, Syfy) - Sally wields new powers thanks to some new ghost friends and Josh tries to deal with a change (to say the least!) in his relationship with Nora.

Castle (10pm, ABC) - A popular reality TV star becomes a murder suspect when a well-known dog trainer turns up dead.