Akkana Peck's series on creating your own holiday cards with GIMP also teaches useful GIMP techniques for all occasions.

Make Your Own Holiday Cards with GIMP
Printing Your Custom GIMP Holiday Cards
Fixing Your Holiday Photos With GIMP

Remember to be careful out there:

Top Ten Security Tips for the Holidays
Bah Humbug: Koobface Worm Hits Facebook, Again

Who says geeks don't have senses of humor:

Christmas Tech Jokes 2008 Edition

Sometimes Christmas presents arrive early:

SCO Cans Darl: The Christmas Came Early News Roundup

Sometimes the Grinch comes instead:

Terry Childs: Another Christmas in jail

I wish everyone a great holiday, and for everyone who does not celebrate anything special this time of year, good wishes to you!