Matthew has gotten quite proficient at saying "momma" and "dadda". We were in Target this past weekend, and as he was walking up to Darren, he said 'da-da'. It was so pronounced and clear, it gave me goosebumps.
And 'ma-ma' has made a come back after a very long absence. He now says it when he wants to show me something-- an excited 'ma-ma' or when he wants something-- a whining 'ma-ma'. I am awed (and a little saddened) that he's so proficient in using it in a whine given he's only been using it full time for about 10 days now.
He just keeps adding words and phrases. This week, he's added:
'I'm okay' (should he fall or something)
'Bless you' (any time someone sneezes)
It may not always be clear, or understandable outside of context, but it is awesome in the true sense of the word.