1. Can the PS3 stream your movies, music and pictures over to the console without any special OS software installed? YES! Can the Xbox 360? NO! (You need a Windows Media Center OS to do this)
Not everyone has that OS and can afford it.
WRONG. I can run all my movies, music and pictures direct from the consoles media tab. To run my avi I downloaded the patch, about 1MB, and away I went. Spot on.
2..... Ahh, couldn't bothered reading anymore to be fair. Do whatever you like to your PS3. Just wait for it to crash with some n00bs hacked softwear or something. If the device is locked then nothing can get on and corrupt your system. And if it does then MS will cover you. Sony won't do that.
Plus, everyone I know who has both platforms say the 360 is better for games. Full stop. And now with MS supporting BluRay there really is no need to invest in a PS3 - .
My 2p worth.