Over the years, we've had a lot of great threads about how to handle the holidays while following SBD. We even have some specific threads in the Recipe Forum that are dedicated to SBD-safe holiday recipes!
I've compiled links to all the holiday threads on the board I could find. If you find some that I've missed, just post a link to them below and I'll add 'em to this list. I've listed the year of the thread after the title, in parenthesis. Be aware that the list of foods to avoid/enjoy has changed over the years, so some of this information may be out of date.
Hopefully, this'll help keep this great information handy for us all!
General Holiday Help
But It's CHRISTMAS!!!! (2005, wonderful article about using holidays as an excuse to overeat or eat off plan)
9 Ways to Avoid Holiday Weight Gain (2005)
Holiday Questions and Answers (2003-2008) This is a compilation of many holiday-related threads. Look at the titles above each post to see when the topic changes, slightly.
How do you make it through Holiday Parties? (2007)
Holiday Success Strategies--What Are Yours? (2008)
Post Holiday Lessons Learned (2008)
Alcohol and the Holidays.... (2009)
Alcohol Guidelines for South Beach from the Daily Dish (2009)
Thanksgiving
Thanksgiving recipe ideas (2008)
Christmas
What is your Christmas menu? (2004)
But It's CHRISTMAS!!!! (2005, wonderful article about using holidays as an excuse to overeat or eat off plan)
Christmas Dinner?? (2008)
Recipes
Thanksgiving recipe ideas (2008)
SBD Holiday Appetizers (various phases) (2004)
SBD Holiday Main Dishes (various phases) (2004-2008)
SBD Holiday Dessert Recipes (various phases) (2004-2008)
SBD Holiday Side Dishes (various phases) (2004-2008)