We thought it was a wee bit ridiculous that Geohot's original iOS 4.1 jailbreak only worked on Windows
, but that's a thing of the past now -- limera1n now supports Mac as well, and the Chronic Dev Team's greenpois0n variant can purportedly free your device from the Apple shackles of any of OS X, Linux or Windows. Mind you, there's still no working carrier unlock for iOS 4.1, so be sure to back up your baseband and don't expect to be making calls on T-Mobile USA -- and remember kids, there are always risks
to playing chicken with the Apple firmware train.
[Thanks to everyone who sent this in]