Just came across this very cool online emulator that lets you get a first hand experience of how the Google Android based phone T-Mobile G1 (aka HTC Dream) will look and behave like. The sliding notification mechanisms look cool, few of the things aren’t working but still a good thing to check out. However, I don’t know if this is an official site by T-Mobile or not.
Linky: http://tmobile.modeaondemand.com/htc/g1/