Natalie has added "mmm-hmm" and "play" to her repertoire (probably more than that, but that's what I've been able to pick out!). She also says, "Read." (She actually could already say this, but I forgot to put it on the list the other day!)
I've noticed that she says "Want down?" exclusively, whether she wants up, down, off, or out. She can be sitting on your lap and quite appropriately say, "Want down?" However, she can also be standing on the floor and hold out her arms for you to pick her up and say, "Want down?" Yesterday, she was in the Pack and Play and wanted out. You guessed it: "Want down?" Clearly we need to work on "up" and "out"!
If you're on Facebook, you can read this in my status update, but I'll put it here too. Natalie will eat Sarah's crayons if she finds them (leads to some interesting shades of color in her diapers). Apparently she wanted to save one for a later snack; I opened the refrigerator to find part of a purple crayon sitting on the shelf.