iPod (Classic)

Probably the best MP3 player in the world, it is admittedly a bit expensive, but doubles as an USB/Firewire hard disk.

It can sync to iCal (via iSync), and there is now no distinction between Windows and Mac versions (Generation 1 devices which needed a Firewire card and included a 6-to-4 pin adapter - powered to non-powered).

The "Classic" version launched on 2007-09-05:

The video-enabled fatter 80GB version launched on 2006-09-12:

The Photo version:

The Generation 4 iPod:

The Generation 3 look:

The vintage (Generation 1 and 2) iPod (which is what I have):

Check out this Review, which includes photos of a disassembled iPod.