I, on the other hand, can see a use for this. I'd put one in my guest room with a monitor as a web browsing PC, and maybe one in the kitchen (great for looking up recipes).
My Eee PC can handle hulu and youtube most of the time, so it could also be used to stream compressed video streams - a plus.
However, it is too underpowered to become my PVR. For that, I'd have to stick to a stronger machine with dedicated hardware.
Overall, I think it is a good idea - it creates a niche in the market.
Will I buy one right away? Not right now - my budget is tight and I am waiting to see the final specs on the T91.