We have this problem with 2-year-old Murphy, too. He'll often jump up and nip at our hands or the sleeves of our shirt. Usually we say "no bite" and immediately walk away, ignoring him. He stops and looks confused. I do think walking away is the best remedy. But I'm going to try Micki's idea, too!

I once read that you can lift your knee up, which keeps the dog from jumping on you, but you have to be careful not to knock your dog onto his back...