using ipod without itunes

Did you know that you’re not obliged to use itunes in order to put mp3 inside your ipod?
Many alternatives exist to itunes and most of them can run on Apple, Linux and Windows PC.
Wikipedia has an interesting comparative of existing solution for using your ipod without itunes.
A very common solution for using your ipod without itunes would simply be to use winamp which has an integrated support for all mp3 players.
Yamipod can also be an interesting alternative (it has also the merits of being fully cross platform).