Has anybody ever truly said, "Damn! I really need to plug my laptop into a television!"
I have.
Plug a set of speakers in, connected an S-Video cable and the AC Adapter, disabled screensaver.
Watch Hulu and Youtube videos on a screen significantly larger than my laptop's, so I can sit back and enjoy the first week of being in my new apartment (Cable company came and hooked us up to the internet on the same afternoon we moved in, which was amazing).
It's one of the draws to a compact device -- knowing you can carry it from room to room and show videos.
Depending on the setup, I could see this as being useful in an educational setting -- give the teachers a lightweight device that they can check out from a central repository (the media center at my old high school comes to mind), and something to project images up to. When they're done, check 'em back in, or chain them down securely to something that's immobile.
Instead of those boring laminate slides and the plain overhead projectors, you could have something that can be colorful and interactive. It could certainly make Biology much more interesting, for example.
If a device like this catches on in an educational setting, you could end up with lots of applications that can save money in the long run.
Virtual dissection for biology class, anyone? Can't object so much to cutting things open when there's no formaldehyde smell (note to self: if this app happens, create a formaldehyde scented diffuser for that "Real Dissection Smell"...).
No? How about 3D rotatable molecules for chemistry classes to help visualize what's being worked with?
No? How about a visual math application, helping people who are learning the basics of algebra visualize how you get from one point to another when using it? I know I could have used it -- I nearly failed Algebra the first time, because I couldn't make it make sense in my head until someone actually started drawing some of it out for me.
I'm sure that there are a boatload of other suggestions that are out there, too. Make the device and the necessary gear to set it up in an educational environment affordable, and I'd dare say there are schools that would consider running a pilot program to see how much it boosts education by, at the very least.
But alas, I ramble too much and feel like I might be preaching to the choir. :)