Seems there is the possibility based on these reviews that the G1 isn't ready for prime time. I guess time will tell.
http://www.boygeniusreport.com/2008/10/16/t-mobile-g1-review/#more-6234
http://www.engadget.com/2008/10/16/t-mobile-g1-review-part-1-hardware/
http://www.boygeniusreport.com/2008/10/16/t-mobile-g1-review/#more-6234
http://www.engadget.com/2008/10/16/t-mobile-g1-review-part-1-hardware/