Looks like Razer is taking pre-orders on their new mechanical switch gaming keyboard (versus traditional membrane switches), called the "BlackWidow". Appears there are two versions, with a more expensive one for $130 US and the cheaper one for $80, only difference appears to be backlighting level adjustment for the "Ultimate" version.

I'm actually pleased to see Razer get into the niche market of mechanical's and I think they will be successful with it. From information I have found their keys are custom switches with several years of research.

Here's also a video demonstrating the sound from the clicks and the backlighting..