"Oh, Sit!" (7 p.m., WUCW, Ch. 23) elevates musical chairs into a fast-paced game show with contestants vying for big money. If this show beats the odds and actually works, look out for an adaptation of bobbing for apples called "Hi, Bob!"Back to school
Remember the trauma, the suspense, the scandal when Serena returned to a New York City high school? Need a refresher course? Catch 2007's first three episodes of "Gossip Girl" (7 p.m., Style) and watch how actress Blake Lively blossomed into a star.Toys 'R' them
"Toy Hunter" (9 p.m., Travel) is yet another series about collectors and the dealers who try to bargain with them. Jordan Hembrough tries to get his hands on a Luke Skywalker Lightsaber, a "Six Million Dollar Man" space probe and a Care Bears Treat Heart Pig. Um, what about a Wanda Sykes bobblehead? Let's talk.