Nice Spring,
I wasn't aware of current state (W3C Candidate Recommendation) for Media Queries so seeing different scenarios to benefit from this information was a pretty one :)
IE9 supports them, so you may test it in a Windows Slate. Of course you can maximize your iPad and SharePoint too:
http://mike-greene.com/2010/10/enhancing-the-sharepoint-2010-ui-ipad-orientation-detection/
It would be nice to get support in the upcoming update for Windows Phone 7!
Bye