Anyone use GeeXboX?

For anyone who has not used this excellent app YOU SHOULD NOW, you don't even need a harddrive to run Divx, Xvids or even DVD's you can play them on any PC without even booting into Windows. It boots straight off the CD and loads into memory It also looks great and doesn't need much to run and will run on most Intel/AMD box's with a decent graphics card.
Oh and did I mention its only a 4.4MB download. :-)