Jul!, a creative and delightfully disturbing animated advent calendar (some images possibly NSFW). Via.
Animated Advent Calendar [via mefi projects] Want a way to count down the days till the Santa (with or without companion(s)) comes to town, but you don't want to go out and spend money on a disposable bit of proto-landfill with daily entries that don't dance? The Online Advent Calendar is your answer. The '08 version is also available for viewing.
Word Magazine's Advent Calendar. The Man in Black in a field of white. Diana + (Flo and Mary) in Santa hats. "Weird Al"'s post-apocalyptic Xmas. Thin Pistols/Sex Lizzy serenade Kenny Everett. Grace Jones uncrated for Pee Wee. And that's just the first five days.
Electric December Interactive advent calendar. 24 days of unique interactive presents and emailable cards from some of Bristol's finest creative talents. Including Aardman Animations, Insanely Great, Bristol Old Vic, Burrell Durrant Hifle and many more. [More info below]