I love my iPod mini. The one annoyance I had with it was that when it wakes from a deep sleep (not used for 36 hrs), it loses some settings. Primarily, the one that annoyed me was the cliker settings. I generally set it to off, to save power, and so it doesn’t, well…, click. There were also issues about the main menu items and all that, but it didn’t bother me so much.
As of the newest firmware (1.4), they have fixed this issue. Thank goodness! Unfortunately, they broke the Smart Playlist feature. You see, the Smart Playlists on the iPod would update if you changed some attribute (typically the rating) of a song on the iPod. Now the feature only works while you’re in iTunes. This is supposed to be fixed.
John Gruber has some interesting views on the podcasting phenomenon, and why Apple had to release new firmware and iTunes.