Sure, it's supposed to be a simple holiday celebration of your organizational culture and a productive year ...
The annals of office-party history are rife with woeful tales of the poor sad sack from Accounting who decides to demonstrate awesome Zumba skills from atop a desk. Or the slightly sozzled (now ex-)data-entry person who levels a volley of hidden fury at the boss. Or countless awkward Mistletoe Moments. Good times: not for the faint of heart.
Hey, it's still work. Office politics are still in effect. Your carefully cultivated image is still on display, alcohol notwithstanding. So here's a helpful and fun video from Vanity Fair that can help you navigate the complexities of your office holiday party, since you probably have no choice but to attend or risk coming off as insultingly aloof.
With a little care, you can actually have fun at one of these shindigs. So keep your head on straight (you can get blitzed later) and have a happy holiday.