It was inevitable, was it not? T-Mobile's G1 lasted an entire week as the T-Mobile G1; now, it's really anyone's G1. Thanks to the kids over at Unlock T-Mobile G1, any owner with a few spare moments and $22.99 can open their handset up for use on AT&T or any other GSM network across the globe. Reportedly, prospective unlockers simply hand over the aforementioned cash and their IMEI code (scary, we know), and in return they receive an eight-digit unlock code that frees it from the bonds of T-Mobile. Initial tests have shown that calling and texting work just fine on non-native networks, but the inability to even login to Gmail (and thus, the Android Market, etc.) puts a real damper on things. No worries -- we're sure those minor hindrances will be worked out in short order. A video full of proof is waiting just beyond the break.