I ended up following the MacWorld Keynote address via the MacScoop low-bandwidth feed, which was sufficient enough to get the facts as they rolled in. Sufficient enough, in fact, for a colleague sitting next to me to try ordering an iPod Shuffle as soon as the words "ships today" appeared on the screen. He didn't have any luck since it seems that at least a million other people were trying to do the same thing. The online store appears to be up now though.
I have to say, I think the premise of the iPod Shuffle is good. The idea of random selections of songs out of your music collection works for me - this is generally how I listen to music anyways. If I manually create playlists they always seem to contain the same set of songs :-)
The Mac Mini looks good too. A little underpowered in the video card department, but a good entry level unit. And...wow...is it ever small. I know a number of people who've been thinking of switching from Windows systems and this will probably push them into it.
The only thing I was disappointed about: I was hoping for bumped PowerBook specs - I'd like to upgrade to a 15", and now I'm going to have to wait until the rumoured speed-bumps come true...
Lots of pictures and witty repartee at my favorite technology site, Gizmodo