what do you guys wear in 20 degree weather?

[Wary Buck]

Sitka Gear heavy core bottoms, Traverse pants, a layer of Winona fleece, and then the Celsius bibs on the bottom.

On top, Sitka core shirt, last year's Mountain shirt, Sitka vest, one layer of Winona fleece, and then last year's 90% coat and this year's Celsius coat.

I wear the Sitka beanie and the heavier cap they make.  Gloves, but keep hands in pockets with handwarmer until crunch time.  

My biggest problem is my feet.  Boot-Blankets are still the best I've found.  A footwarmer in the boots helps a lot too.