Yesterday the iPhone Dev Team released QuickPwn (the Torrent link) for Macintosh. This is the Macintosh OS X version of the same tool they released for Windows users several weeks ago. The different between this tool and the Pwnage Tool the iPhone Dev Team has also released for the Macintosh is that the QuickPwn will not require a restore using iTunes, therefore a bit friendlier to layman iPhone users (junior hackers) who need to unlock and jailbreak their iPhone (1st generation) or jailbreak their iPhone 3G. iPhone Dev Team says the Pwnage Tool will still be enhanced and supported as it will be the tool for iPhone users who like to customize their .IPSW package for the iPhone.
I personally have not yet use this tool as my iPhone has already been upgraded to iPhone firmware 2.0.2 using the Pwnage Tool for Macintosh.
Please feel free to share your experiences; either good or bad, here via comments.