I call this my "No Fail" chunky/bulky hat because I've knit it umpteen times and it's fast, easy, fits really well and always looks wonderful no matter what yarn I use.
Called "Hats Off to '99 Knit & braided scarf and hat" don't let the weight of yarn fool you, it can be adjusted to suit because it's basically 2X2 rib. I've never used anything but bulky yarn. Search for the website:
and click on the "projects" link - you'll get a whole page of free patterns to look at along with this hat pattern.
Hope this helps.