The second commercial Android phone was released back in February by Vodafone. Expectations are that this new phone will be available real soon in the US. Based on price drops of the HTC G1, I expect that to be true.
The G2 (aka Magic), is a much sexier looking phone than the G1. It doesn't have a keyboard, but uses the latest Cupcake update to the Android operating system that allows for typing directly on the screen. Rumors are that the phone also has much better battery life than the G1.
Here's a nice picture of the Magic: