I was one of the July 2012 backers and I finally received my OUYA right on Memorial weekend on Saturday afternoon.
Here’s my unboxing, thoughts, and if you don’t have time to see the whole thing and you’re thinking about getting one, get it, totally worth the $99. They did a great job overall, this thing can play any Android video game, it runs Android 4.1 out of the box, it can also stream video really nice as well (see the Twich app to watch live streams from gamers worldwide to get the picture of the streaming capabilities)
I can safely say “I love OUYA”.
(and sorry for the pronuciation, the way to pronounce it is “OOH-Yah”