I would love to see a good GC app for the Android platform.
I just recently purchased the new HTC Hero from Sprint, and this phone is amazing! I also have an iPhone 3G for my small business. It's a nice phone, but isn't half as great as everyone would like you to believe. From first impressions of the Hero, and Android I think Apple may be in for a rude awakening.
Come on Groundspeak...Help us out. With carriers like Sprint, AT&T, and now Verizon offering Android phones it would be foolish to miss out this opportunity.