It's a device that is mostly geared towards consumption.
If there is going to be interoperability like that then I'd expect that to come from the same people that right now have 'jailbroken' iphones and other renegade stuff like that.
The day Apple sanctions their tablet to be used strictly as a dumb input device I'll buy you a beer.
It's a good idea though, I'll grant you that, I definitely would like to see that happen. Especially if you could use the bluetooth connection for doing it.
Car pc in the booth, use tablet as the user interface via bluetooth.
That'd be a nice niche. But I'm pretty sure it would require some 'warranty voided' hacking.
If some smart aleck manages to get Ubuntu NBR running on the 3G model it would suddenly be a whole lot more interesting to me.
Couldn't you just use the iPad as an input device for a desktop PC?