It's a plug-in for photoshop found here
.
I've been playing with it on somebody else's machine. Wow. It even makes pics taken from a 50D shot at 3200 ISO look half way presentable.
I have Noise Ninja and this thing puts it to shame IMO. It also runs circles around the noise reduction features in LightRoom.
I'm actually thinking that shooting at 1600+ ISO is even possible - something I think the 50D is a dog at doing. 



