[burlburrbrian]

If you are looking for something more pretty, the Happy Hacking keyboards are clean and have a small form factor. They don't have a clicky sound, but more of a "thock" because of the different switches. It also has support for OS X media keys.

If you are considering purchasing a mechanical keyboard, I would recommend checking out: http://geekhack.org/ beforehand. You can gain a better feel for types of mechanical keyboards out there, as the Das is only one of many.