The Podcaster Pro™ is a USB Audio device that has been over a decade in the making by Adam Curry.
The Podcaster Pro™, your laptop, and an XLR mic are all you need to make podcasts that sound like they were recorded in a professional recording studio!
The Podcaster Pro™ brings Mic Preamps, EQ, Compressor, Noise-gate, Mix-minus, and Voice Processing in a single USB device about the size of a hardcover book… More at Indiegogo.
Seems expensive, but there is a lot to be said for ease of use and just getting down to creating something. Still amazes me how many low-grade podcasts there are out there- a decent microphone is far from expensive these days.