I modified the stock Water with the leaves LWP in the LiveWallpapers.apk from FroYo. Changed the background to a space pic and replaced the leaves with little Androids. If you use your imagination, the ripples can be gamma rays.
This is a modified LiveWallpapers.apk from Chevyno1's SS 4.0 (FroYo). It has not been tested on 2.1
update.zip was killing 3G service. Sorry. The link now points to the LiveWallpapers.apk. Replace the one in /system/app. You must be rooted.