baby sign language

We've been teaching Joshua a tiny bit of sign language to help us communicate with each other until he learns to talk. I tried teaching him when he was around eight to ten months old, with absolutely no success. :) But since he's turned one, he has been able to pick it up so quickly! He can sign "more" (which sometimes functions as "want" or "again"), "all done", and can understand "water" (but doesn't sign it yet). I'd been thinking of teaching him something to communicate that he wanted help with something, such as the sign for "please". Today seemed like the perfect opportunity, since he kept asking me to open something for him (a container in which he was dropping magnets). He figured it out in no time.... and it might be the most adorable thing I've ever seen. :)