16 months and signing well

we got some dvd's from the library on baby signing and she LOVED them. she picked up quite a few new signs (as did I) and has begun using them. at this point she knows moon, cracker, milk, more, frog, socks, dog, drink, eat, chupete -pacifier, chicken/hen, cat. I do more with her and she'll soon pick them up as well. The dvd's were wonderful and I will be checking them out again since she asked for them by doing the "baby signing time" signs.