Hamildolph (An American Christmas Story) An a capella re-singing of Rudolph the Red Nosed Reindeer in the style of Hamilton, by Eclipse 6. (The antlers are the perfect icing on the cake.)
Nearly 200 years after "A Visit from St. Nicholas" was written, the authorship is still in dispute. In the years since, there have been quite a few parodies and variants of the poem written, recorded and performed, including at least two different versions of a Cajun Night Before Christmas (a recording of the version by Te-Jules, and Trosclair's version[Google books preview], read by Larry Ray, recorded from WLOX). Snopes tracked down the history of The Soldier's Night Before Christmas, Fifties Web collected 21 tame versions (with auto-playing music), and Dirty Xmas has a number of "adult" versions. Yuks 'R' Us has a large collection, including some dated computer-related stories. Speaking of dated, you can view a vintage '98 "enhanced" version of the original poem plus more variations from Purple Lion (a member of the Merry Christmas Webring from 1998). But for the ultimate collection of variants and parodies, you might recall this thread from 2002. The link is dead, but Archive.org caught the site around that time, with 581 versions. That was over a decade ago, and now Alechemist Matt is up to 849 versions, parodies and variants of 'Twas the Night Before Christmas.
Sometimes, the full meaning of a moment isn't realized until years later. Dick Brookins certainly had no idea what would come of that December day, back in 1944. Brookins and other members of the U.S. Army's 28th Infantry Division Signal Corps were in Wiltz, a small town in Luxembourg, just days before what would turn into the Battle of the Bulge. This U.S. soldier stood in for an absent Saint Nicholas... it was to change his life and help him find some meaning for the war in Europe. As it turns out, someone was filming that day when an Army jeep carried the American St. Nick through the streets giving treats to the local children. It brought him back 65 years later.
Psychedelic Santa Claus. "Modern Christmas traditions are based on ancient mushroom-using shamans." [Via J-Walk blog.]
Sober Santa. Too much politics today, not enough Christmas fun. Here's a drunk Santa game from b3ta. Pretty tough once you get going.