Winter Bike Commuting in Sacramento

The mornings are pretty cold this time of year in Sacramento. Not cold enough to really complain, this is still California. But certainly cold enough to add layer after layer before my morning commute. Here's a comic of what i think I look like leaving for work each morning:
 Under the outerlayers I have a sweater, shirts, tights, there's a couple scarves in there for good measure, it's a little ridiculous. But I stay warm on my 15 minute ride to work.
I drew this picture using my brand new Inkling! Technically it's Fibers.com's inkling, but as the head of the art department I get to play with it!
This image is a little inspired by my new favorite blog Bikey Face! This girl is like me only in an alternate universe known as New England.
Anyway, what are your winter riding tips? What's your favorite piece of winter bike commuting apparel?