Al Gore's Inconvenient Christmas (2005). The former Vice President moderates yet another battle between Snow Miser and Heat Miser and teaches the kids important lessons in climate change. Included are revelatons that Mr. Heat Miser is on the Exxon/Mobil payroll, and that Mr. Snow Miser is still using environmentally-incorrect freon for keeping his lair chilly.
Rush Limbaugh's Christmas Tea Party (2009). It turns out that guest Glenn Beck really can't croon "White Christmas", but gets pretty effective when he bursts into tears at the end of it. Sarah Palin provides the Christmas Moose feast. Takes place at Sarah's house in Alaska, which you can see the North Pole from.
Joe Camel's Smokin' Christmas! (1988) The rarely-glimpsed children's cartoon characters were seen here, including ol Joe himself, along with his friends the Puffapotamus, Bobby the BUTTerfly (who taught kids to properly dispose of cigarette butts and not litter!) and Joe Junior.
Star Wars Holiday Special - Special Edition (2003). It seems that George Lucas eventually re-does just about everything he does, including his legendarily bad "Star Wars Holiday Special" from 1978. As he usually does, he adds a lot more CGI and adds in a few explosions with trendy white shock-wave rings. He thought he could improve this one by digitally inserting Jar Jar Binks throughout the show, even including the "makes your ears bleed" song "Meesa Happy Holiday". The Boba Fett cartoon, the only part of the 1978 show that anyone liked, is removed to make way for the Jar Jar material. After all, you can't have a character that people actually like in it, can you?
If you wonder why Lucas' "Howard the Duck's Holiday Quackup" (1987) is not included in this list, it is because no copies are known to survive after the riots and arson and other destruction triggered by its theatrical premiere. It's just too dangerously bad.
Billy Mays Oxyholiday (2007). The pitchman makes his case that Christmas is the messiest holiday of all, and what better to take care of it than with Oxyclean. Guest host Mimi Umidon. He sings Christmas songs such as "Let it Snow, Let it Snow, Let it Snow". Only ever seen around 3:00 AM on upper cable channels sandwiched between two-hour-long Guthy-Renker sports equipment commercials. Has a special guest appearance by Jessica Simpson, the Queen of Infomercial Acne.
"Twilight" Christmas (2009). Because nothing says Christmas like vampires and werewolves, right? Bella convinces Jacob and Edward to team up to save Santa from a Volturi vendetta. Songs include "Werewolves of Christmas" sung by the Wolf Pack, and Robert Pattinson even gets to croon "Vampires Down the Chimney".
Battlestar Galactica Christmas Special (1981). While George Lucas wants everyone to forget about the "Star Wars Holiday Special", Glen A Larson wants everyone to forget about this holiday turkey, in which Rudolph leads the ragtag fleet past a Cylon trap. And they do end up using Lucifer's tiny blinky head as a Christmas tree ornament. "Bah, your command!"
If you want to see more, visit this page: The 10 Least Successful Holiday Specials