Gossip Girl

Gossip Girl
9/8c CW
It's B's b-day, so that means the day is full of surprises, like in the form of an unexpected guest at her party. The birthday girl will also have to deal with Serena and Nate trying to end her and Chuck's devious mind games. Singer Robyn performs.

The Women of SNL
9/8c NBC
Girl power abounds in this comedy special, which shines the spotlight on the many richly skilled lady troupers who have kicked up Saturday Night Live through the show's 35-year history. Ladies' night commences with archival clips of fan-favorite sketches and new original skits. Among those on hand: Rachel Dratch, Nora Dunn, Tina Fey, Ana Gasteyer, Julia Louis-Dreyfus, original 1975-80 player Laraine Newman, Cheri Oteri, Amy Poehler, Maya Rudolph, Molly Shannon and current cast member Kristen Wiig. — Dean Maurer

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Dancing with the Stars
8/7c ABC
Tonight the show goes all out for its special 200th episode! Fifty former contestants are returning, including Kristi Yamaguchi and Apolo Ohno, who will serve as captains of the current contestants' team dances. And they're not the only ones being put to work, as the six following familiar names will be sitting in as guest judges: Helio Castroneves, Kelly Osbourne, Emmitt Smith, Mel B., Drew Lachey and Gilles Marini. — Jennifer Sankowski

Moguls & Movie Stars: A History of Hollywood
8/7c TCM
Pop some popcorn, settle into a comfy chair and get ready to be regaled with "the story of the first great era of American movies from the 1890s to 1970." OK, actually this is just the first chapter in a seven-part documentary series about the influential men and women behind and in front of the camera. Part 1 is "Peepshow Pioneers," and it spans the gestative years of cinema from 1889 to 1907, with a look at the ambitious visionaries who "played with light and shadow on the screen." The early film clips are fascinating, as are the profiles of the men and women who made it happen. Ray Stackhouse

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Monday Night Football
8:30/7:30c ESPN
With all the airtime for the Manning brothers these days, you'd think they're campaigning for Congress. The quarterbacking brothers bid for a third straight prime-time win as Peyton's Colts host division-rival Houston a week after Eli's Giants held off Dallas. Peyton's last action was a Sunday-night win in Washington prior to last week's bye, which was shared by tonight's foe, the high-scoring but defensively-challenged Texans. QB Matt Schaub and Houston are on a four-game road winning streak and immensely boosted their approval rating around the league with a 34-24 opening-day win over Indianapolis, which had won 15 of the previous 16 meetings. Roger Leister

Two and a Half Men
9/8c CBS
Though anyone who gets serious about Charlie has to overlook his promiscuous past, he's so commitment free that he comes pretty much without emotional baggage. But...there is Rose! Charlie's newest love, played by Liz Vassey, isn't happy with Charlie's personal stalker (Melanie Lynskey) and grows more and more frustrated with her presence. — Bill Ecklund

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Weeds
10/9c Showtime
Nancy plays a little "Nancy Drew" (as Andy dubs her), and develops a lead on someone who can hook her up with illegal passports. But because this certain, mysterious contact operates in "a no-lady zone," she must allow Andy to handle the assignment by himself. Warren (Richard Dreyfuss) gets his hands on a bottle of Andy's "special drink" and, after a couple of swigs, turns a little spacey and begins to realize that Nancy and the gang's European getaway is no family vacation---and she may never be coming back. — Ray Stackhouse

Mario Lopez: Saved by the Baby
10:30/9:30c VH1
Mario Lopez has been an actor, a host on Extra and a reality cast member on Dancing with the Stars. What he hasn't been yet is a daddy, but that's about to change. As this reality show begins, his girlfriend Courtney Mazza is six months pregnant, and he is, well, a little shy of having his mind completely wrapped around the parenting process. Will three months be enough time for him to come around? We'll see. — Fred Mitchell