The EeeBox really does what it's supposed to and very well. It's a well priced machine that is compact, looks good and does general office work well, including email, MS Office and internet. You could watch some XVID movies and TV shows, but that's really about it.
The whole thing really isn't bad for someone who wants to get their kids something that pretty much lets them only do work on, or perhaps for a company where what you are allowed to do is limited; not so much in the permissions department, but the power one.
While I personally would never have a need for an EeeBox, I can understand how it will be handy for people. I don't think it's going to have the impact like the EeePC, but people are definitely going to like it and no doubt we're going to see clones come out that will offer better performance and more aggressive pricing as time goes on.
You really could pick at the EeeBox for hours as to all the things it can't do, but the bottom line is ASUS has designed it to do certain things and it manages to do them very well. With a range of colours and no doubt more models coming out in the near future, the chances are you're going to be able to find an EeeBox to not only suit your needs, but also your decor.
As long as you're not expecting to play Crysis on the machine or work with intensive programs like Photoshop and any other graphical manipulation software, you will find yourself happy with the EeeBox. If you are expecting to be able to do those things and more, you will find yourself quickly disappointed.
Like I've said so many times, the EeeBox isn't for everyone, but a $700 graphics card isn't for everyone either, nor is $1500 processors. The EeeBox has its market clearly pointed out and it manages to attack that very well. Really, though, if the EeeBox does kick off we're going to see more and more companies attack the genre with more power and cheaper prices.