Working on this masterpiece today. It already weighs about 15 pounds and it's only about 1/4 done! But, the whole point is for it to be a heavy, weighted blanket for my daughter and her family.
The free pattern is available here: http://www.redheart.com/free-patterns/cabled-shell-throw
I am using Lion Brand Hometown USA super bulky in Napa Valley Pinot with a size N/15 10mm hook.
I should also probably add that one skein only does about two rows when using the yarn and hook I'm using, so when all said and done this will be a very expensive blanket.