A few weeks ago I picked up the Razer BlackWidow keyboard for my main machine in the office. I didn't pick-up this keyboard for any gaming, but rather having been a big fan of their mice, keyboards, and other peripherals over the years. Razer is obviously a gaming-focused company, but their many products I've either bought or received as samples have been wonderful. The build quality is great along with an impressive feature-set and being very reliable.
The Razer BlackWidow is a fully mechanical keyboard for "superior tactility and faster response", on-the-fly macro recording and profiles, multi-media keys, and more. Like the other Razer products, the BlackWidow has been great and is paired with a Razer Lachesis mouse.
In terms of unofficial Razer Linux support happening for the other gaming products, for mouse configuration there is the Razer device configuration tool. This open-source tool is still actively developed with the last commits coming from near the end of 2011. This tool allows configuring Razer LEDs and other features under Linux.
In the past there's also been RazerTool and other now defunct programs for supporting limited functionality of some Razer products.
This situation isn't quite as nice though as the Roccat product support under Linux that's still actively being done with vendor support.
Razer has previously talked about official Linux support a few times, but so far nothing has materialized. I'm hearing this again now that the company is focusing upon a big gaming push into China and they went through a $50M (USD) round of financing last month, but I guess we'll see in the coming months if they bring anything new to Linux gamers.
Getting back to the BlackWidow mechanical keyboard, while the extra gaming functionality isn't supported, the keyboard works quite fine besides that. With not even purchasing this keyboard for gaming but rather just to serve as a very reliable and sturdy keyboard, I'm quite happy with the purchase while it's connected to an Ubuntu Linux machine.