Jailbreak your iPhone
The new firmware version from Sony is already out and it does block PSGroove, PSJailbreak and all other versions. So be careful not to update to 3.42, the PS3 Jailbreak method is only guaranteed to work with firmware 3.41. And don’t try to go online with a hacked PS3, it could very well be possible that hacked consoles will be banned à la Xbox Live.
There are a number of other port, including Dingoo, TI/84+ calculator, Palm Pre and Nokia N900. People are still busy trying to port PSGroove to the iPhone/iPod/iPad and PSP and Spanish hackers are even studying the possibility of using the sixaxis controller (the wired one).