I agree, we're just seeing the tip of this iceberg. A quick glance at a [link|http://www.dictionary.com/cgi-bin/dict.pl?term=pod|dictionary] reveals several possible meanings for pod. Isn't the choice of name rather odd for a humble (cough) MP3 player? Wouldn't iMusic, or iPlayer or similar be more natural? iPod, hmmm, pretty generic for a device fraught with potential.
since it doubles as a external drive, there's nothing stopping you from installing MacOS (or even OSX) on it, assuming you can boot from a FireWire drive.
Let's see...a boot disk with all of my diagnostic/repair tools on it...sweet!