OK, so it's a little wrong to put the Droid 2 eye live wallpaper on a Nexus One. But it's also very, very right. It's a simple install, and you don't have to be rooted to do it. You just need a phone that can handle live wallpapers. Hit up the source link for the download info.
[XDA Developers]
Get the Droid 2 eye live wallpaper now | Android Central