So far, my pile of hats has 8 hats in it (still need to weave in ends, as a tapestry needle somehow was missing from my knitting bag while on the trip):
I think my favorite hat I made so far is this one:Blue Sky Alpacas Extra Yarn) is just so cozy. I also used central double decreases for the crown, and that made me happy. I love me some CDD! :)
There's still time to join in the KAL/CAL fun. You can find all the details in this Ravelry thread!
Happy hat knitting and crocheting!