You can crockpot a pork shoulder to get that good porky sweetness, too.  
Here's why I think posole' works it's magic on people.  You have the sweet, fatty goodness of pork and the spiciness of the chiles in the sauce/gravy/broth, and then the bland starchiness of the hominy to bridge the two.  Taken altogether, it is very simple but amazing. 
I make mine more from scratch by cooking down 6 guajillo peppers in a quart of the pork broth and then putting it thru a colander to get rid of the seeds and the skins of the dried peppers.  A little oregano and garlic, salt to taste.  This stuff freezes nicely, too.  Very important to me because I can't figure out how to make a small batch!  Warning, it can stain plastic storage containers.  
And a nice sprinkling of finely shredded cabbage over the top just because Jordo doesn't like it!