What if your laptop drive is encrypted -- can they make you decrypt it for them?
One option for you might be a small 2.5" external firewire drive with 3 partitions...
(something like
this)
Windows - System
OSX - System
Data - Encrypted with Bestcrypt.
Put some sort of OS bootloder on it as well.
Then sync up the data in the data directory before you go anywhere.
The idea would be to have a drive that could be used somewhere as a portable computer if needed, and if it were confiscated or held hostage by customs for however long, you wouldn't really be
out anything except whatever you did while you were gone (which you could upload to your server before you get back on the plane).
I guess that's sort of what you're going for with the DVD thing. But it would be cool to have an OS setup the way you like it and just use the guts of the other persons machine.