Virtual machines implemented in the CPU! That’s SOOOOOO freaking awsome …
That will sure help the mass-migration from Windows to Open Source OS’s too!
A Dual boot system with Linux & WindowsXP.
Once linux is up and running, you can start moving common tasks between OS’s, rather than an “All or Nothing” approach, and then switch between (Alt+Tab perhaps?) them if one OS cannot perform a particular task.