Kick off your weekend with teen stars doing their part! At 9:00 pm on The N, watch Degrassi in Ecuador, where cast members of the LGBT-inclusive program travel to Ecuador to do volunteer work with the indigenous community. Saturday, December 20 9:00 pm Color Splash, HGTV (30 min) NEW Out interior designer David Bromstad reworks living spaces. Tonight he works over a Mid-Century modern home. 10:00 pm The Graham Norton Show, BBC America (1 hr) NEW Out Irish comedian Graham Norton presents his annual Christmas special tonight, with lots of fun stars dropping by! Most notably, he’ll have Boyzone on, a British boy band with an openly gay singer as part of the ensemble. ------------------------------------------------------------------------ Sunday, December 21 7:00 pm American Dad!, Fox (1 hr) REPEAT ’Tis the season to celebrate three American Dad! episodes featuring omnisexual Roger the Alien, up to his always-amusing and borderline-insane antics. Episodes air at 7, 7:30 and 9:30 pm. 8:00 pm Extreme Makeover: Home Edition, ABC (2 hrs) REPEAT Watch back-to-back encore airings of two heart-warming episodes. Hour One features gay designer Eduardo Xol, while gay craftsman Michael Moloney appears in the second hour. 9:00 pm In the Womb: Identical Twins, National Geographic Channel (1 hr) NEW This documentary investigates identical twins and how their differences may lead to answers in how disease, intelligence and sexual orientation form in the rest of us. 10:00 pm Desperate Housewives, ABC (1 hr, 1 min) REPEAT Check out a hilarious Gaby-centric episode where the former model (and now unkempt mom) tries to regain her social standing in the community. Andrew appears briefly, hard at work for his mother. 11:00 pm Summer Heights High, HBO (30 min) SEASON FINALE This Australian mockumentary satirizes high school life, and features Mr. G., a sexually ambiguous drama teacher with a love for the theater, Chihuahuas and the married science teacher.