That Steve is a sneaky bastard! I can imagine him plotting with his ubergeeks about creating a product that combines Apple's strengths in music and its leadership in design and wi-fi. This does it nicely. Portable Airport Express works!
Imagining myself in a hotel room, office or friends' house plugging this in and having wi-fi was enough. The music thing is cool, though. I have my airport basestation on top of my stack of stereo gear now. Hmmm... I guess I could move it somewhere else and sell or give away my snow basestation. Now that I have decent airport reception with my new Albook, I don't really need the snow to cover the house.
I've got just about my entire music collection (we are talking 100 - 200 CDs) on mp3 at 192 kbps. Now all we need is some wi-fi or bluetooth headphones. Do they have those yet?
I like this move it around the house wherever you need and take it with you thing.
I like the plug in your printer deal too. I got a great color inkjet that I hardly ever use because I'm too lazy to walk in the other room and plug in with USB. Wi-fizing (we bloggers can make up words right?) it would make it just as convenient as my ethernet Laserprinter But then that puts me at 2 of these things. I told you Steve was sneaky...