In a glitzy multimedia event reminiscent of some other high-profile phone we probably don’t need to mention, Google and T-Mobile today introduced the T-Mobile G1, the first Android-based cell phone.  Pricing and availability details (that’s all you care about, right?) are as follows:Existing T-Mobile customers can order today.  However, delivery and store availability won’t be until Oct. 22nd.  Pricing is $179 with a two-year plan.  For other countries, November will see the device in the