I didn't think so when I first read about it. Nobody is going to 'switch' because of all the programs on Windows that also work AT work and with other peoples home computers.
Not to mention that there is no monitor, keyboard or mouse. CNET News.com compared the machines to PC's and you can get a Pentium 4 with everything you would need.
So why do I think now the Mini MAC will be revolutionary?
Mostly because of what you can do with it for the price. Media center, iPod native connection, mobility (just take the box as long as you know where your going has a mouse/keyboard/monitor then your fine), you can network it with your other PC's and has all those cool programs for making digital stuff.
All of a sudden, its not a replacement, its a add-on. A very important add on. I think its one that will bring on a new wave a media in the home.
While I do not know if people will 'switch', I do think the TV/Cable networks are going to have to change their business concepts. Now people will truely have a media center with the PC and the Mini MAC.
Funny... wasn't Microsoft suppossed to do that with media center?