I worked at Wal-Mart around Christmas 2005ish when the Nano first came out, and we sold out immediately. I don't know how many mothers I had to suggest the Creative Zen to as an alternative. We also happened to receive all of those Creative Zen units back as returns on the 26th
I also remember hacking my Nano so it could play video files. You've never watched Serenity until you've watched it on a 0.96" LCD screen!