I've never watched the show, but we did use basic signs with Mary Joyce, and it worked well. She learned "more," "all done," "eat," and I think a couple of others, but I can't think right now. We'll do the same with Katherine. She's getting about to that age. Some people do a lot more than we did, but even our few signs were a big help.

Just remembered a couple of others we did--"please" and "thank you." We added those a little later.