An 11-hour marathon of holiday episodes from a number of series, including “Dharma & Greg,” “Spin City,” “Married...With Children,” “Malcolm in the Middle,” “King of the Hill” and “That '70s Show.” First up: a 1998 “Buffy the Vampire Slayer” outing that pays tribute to “A Christmas Carol” when Angel is visited by victims past, who present him with a deadly way out of his bleak future. Meanwhile, Faith has no home for the holiday, and Willow gets naughty in hopes of making nice with Oz.