OQOTalk.com forum members JT and Troy lit the mobile blogosphere on fire when they demoed an OQO Model 02 running Mac OS X. They have now posted complete instructions on how to do this yourself. Be sure you purchase a license of Leopard before going down this trail – you definitely want to remain in compliance with all the legalese. We do not recommend violating any license agreements in order to get this going.
Here are some more instructions on getting a TRIPLE boot into Ubuntu, XP, and Leopard.