You're still missing the point. That's still just technology - and technology is irrelevant unless it offers a benefit. In this case the only benefit of your high resolution monitor is that it makes watching a movie on a piddly little screen marginally less unbearable. It could have a 10,000 PPI monitor and it still wouldn't compete.
Why in the world would I want to watch a film on a 9 inch screen when I could be watching it on a 52 inch? Or bigger if I get round to getting a new telly. Why would I want to have your crappy sound when I could be rigged up through my full 5.1 surround sound system with ridculously powerful bass? Why would I want to reduce myself to an essentially solitary experience when I could invite my freinds over, open up a bottle of wine and moan about how George Lucas sold us out while secretly creaming ourselves over the effects?
In truth the only thing your slate has over my telly as far as viewing is concerned is that it's portable. But I can't think of anything worse than watching a film on a train. What a way to ruin the experience that would be.
And that's really my objection to these devices. They're one big compromise from start to finish. They do lots of different things quite well but I can't think of a single thing they do better than a dedicated device that already exists and which, invariably, I already own.
Hacks post a while back might have been a bit tongue in cheek (and VERY amusing

) but it's also right on the money for me. I wouldn't have bought a bigger table, though. I'd have just printed the recipe off the internet and blue tacked it to the wall.