Sony hates people who hack into their consoles and change the official firmware. They have recently been engaged in a long battle against people who wish to liberate their PS3s from Sony's obtrussive firmware so they can use emulators, run homebrew applications and so "other" things you can do with custom firmware. (Flying Cougar Productions does not condone video game piracy in any way.)
After updating the firmware to prevent USB devices from being used hackers have figured out a way to jailbreak their PS3s using Sony's official Dualshock 3 controllers. Now I am not a PS3 user myself so I cannot explain how this works for you but if you wish to learn more about hacking into Sony's consoles I highly suggest you email our resident jailbreaker Udunnojack at email@example.com.
The english guide on how to hack your PS3 has been released. For those of you who don't like to solder you can also use your iPod.