A pair of engineers in Singapore, Andrew "Bunny" Huang and Sean Cross, have developed a working laptop which was designed to be completely open sourced, with no proprietary drivers or software of any kind.  The Novena laptop is powered by a Cortex A9 and an FPGA and runs Debian, even communications are handled by a software-defined radio board.  This is more of a proof of concept than a marketable machine but the links at The Register will take you to the details on how you could build one yourself.  Even the bezel is open source and modifiable, it is a laptop with an upgradable screen!

"This week, the pair developing the Novena open laptop have provided an update on their work. The idea is to develop a usable system that is completely open to customization and scrutiny – from the electronics to the firmware to the operating system to the applications."

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