Joyeux Noel

I thought you might find this interesting. Got it from http://french.about.com/cs/culture/a/christmas.htm

French Christmas Customs and Traditions
In France, Christmas is a time for family and for generosity, marked by family reunions, gifts and candy for children, gifts for the poor, Midnight Mass, and le Réveillon.
The celebration of Christmas in France varies by region. Most provinces celebrate Christmas on the 25th of December, which is a bank holiday. However, in eastern and northern France, the Christmas season begins on 6 December, la fête de Saint Nicolas, and in some provinces la fête des Rois* is one the most important holidays of the Christmas season. In Lyon, 8 December is la Fête de lumières, when Lyonnais pay hommage to the virgin Mary by putting candles in their windows which light up the village.
*In most countries, Epiphany (la fête des Rois) is the 6th of January, whereas in some places in France it is celebrated the first Sunday after 1st January.

French Christmas Traditions
French children put their shoes in front of the fireplace, in the hopes that Père Noël (aka Papa Noël) will fill them with gifts. Candy, fruit, nuts, and small toys will also be hung on the tree overnight. There's also Père Fouettard who gives out spankings to bad children (sort of the equivalent of Santa Claus giving coal to the naughty).

Le Réveillon
Although fewer and fewer French attend la Messe de Minuit on Christmas Eve, it is still an important part of Christmas for many families. It is followed by a huge feast, called le Réveillon (from the verb réveiller, to wake up or revive). Le Réveillon is a symbolic awakening to the meaning of Christ's birth and is the culinary high point of the season, which may be enjoyed at home or in a restaurant or café that is open all night. Throughout the French Christmas season, there are special traditional desserts:
La bûche de Noël (Yule log) - A log-shaped cake made of chocolate and chestnuts. Representative of the special wood log burned from Christmas Eve to New Year's Day in the Périgord, which is a holdover from a pagan Gaul celebration.
Le pain calendeau (in southern France) - Christmas loaf, part of which is given to a poor person.
La Galette des Rois (on Epiphany) - round cake which is cut into pieces and distributed by a child, known as le petit roi or l'enfant soleil, hiding under the table. Whoever finds la fève - the charm hidden inside - is King or Queen and can choose a partner.

French Christmas Decorations
The sapin de Noël is the main decoration in homes, streets, shops, offices, and factories. The sapin de Noël appeared in Alsace in the 14th century at a time, decorated with apples, paper flowers, and ribbons, and was introduced in France in 1837.
Another important aspect of French Christmas celebrations is the crèche filled with santons, which is displayed in churches and many homes. Living crèches in the form of plays and puppet shows based on the Nativity are commonly performed to teach the important ideas of Christianity and the Christmas celebration.
Mistletoe is hung above the door during the Christmas season to bring good fortune throughout the year.
After Réveillon, it's customary to leave a candle burning in case the Virgin Mary passes by.