Mine just spent the past 10 minutes licking my face, after polishing off a bowlful of: kibble (Canidae, Natural Balance, and a little Chef Michael's, mixed), some rice, and some lean ground beef, with some frozen peas.
No, Darwin isn't a big licker of people. But when we give him a good meal, he lays down and licks the bowl for like 30 minutes after the bowl is empty! It's funny!