I don't have an iPod - just a cute little MP3 player my mom gave me for Christmas last year and I use it just about every day while I'm running or otherwise working out. If I could wear it all day, I probably would.
There are over 250 songs crammed on to 1 gigabyte.
A sampling of artists:
The Beatles (lots)
Rolling Stones (not as much, but still some good stuff and I now know the lyrics to "Sympathy for the Devil" other than the "woo, woo" bits)
Guadalcanal Diary (yes, Scott, "Always Saturday")
The Kaiser Chiefs
The Dandy Warhols
and a bunch of other bands/musical artists
What are you listening to these days?