If you are a Seinfeld addict, as I am, you have probably already celebrated Festivus ("A Festivus for the rest of us"). Traditionally celebrated on Dec. 23, it is also enjoyed at other times of the year. Along with the unadorned aluminum (beer can?) pole, festivities include meatloaf, feats of strength, and the airing of grievances. If all this seems foreign to you, and somewhat weird, I will resort to the usual greeting... Happy Holidays to all of you!