J.W.
I have a 16 month old little boy, we go to the Little Gym and have for about a year now. They have a great program even if your little one isn't quite walking. My son loves it, and my newest edition (due in December) will attend eventually. The interaction with the other little ones is great, plus I think my son learned to walk even faster by watching the slightly older ones. Plus the interaction with other little ones is really good for them. They sing, do excercises, play with bells and other musical instruments, everything is well padded, and they show you how to spot your child the right way (to make sure they don't get injured). I recommend it highly!