Blue Microphones - the folks behind such iconic home recording mics as the Blue Yeti and high-end mics like the Blue Bottle mic - have just released the Raspberry. It's a USB mic that works on your PC or Mac, as well as with iPhones and iPads.
Blue is calling the Raspberry "the ultimate mobile USB mic."
And my review of the Blue Spark Digital (also can be used with mobile devices) is here: My Review Of The Blue Spark Digital USB And iOS Microphone.
Anyway, I have not had a chance to grab a Raspberry to put it through its paces in a Home Brew Audio review yet. But when I do, I'll let y'all know:).
In the mean time, you can find out what Blue has to say about the Raspberry. They have all the information you could want to tell you about the new mic - pics, videos, and lots of specs and under-the-hood type stuff. Check that out here: http://www.bluemic.com/products/raspberry/