I got to spend all afternoon playing around with an iPod Nano & iTunes, and I got paid for it!
One of our clients wanted to ship the iPod to one of their clients loaded with a bunch of their podcasts on it. Thing is, they weren't really podcasts, but just a bunch of random MP3 files. To get them to show up on the iPod as a podcast I had to create a fake RSS feed for all the MP3's and then copy that and the MP3's to a directory on the web server I have running on my machine, and then subscribe to that podcast through iTunes.
There might have been an easier way, but it let me play around with an iPod all afternoon so I didn't look too hard.