I just published a Droid/N1-only high-resolution shoot'em-up game to the marketplace. Its called "Blastosis: Invasion". It is has classic shoot'em-up action spanning 4 beautifully rendered stages. Action is fast and furious!
There is a free 1-stage LITE version. The full version has an introductory price of $1.49 US.
Here are some screenies: