Hi everyone, I collected the stock wallpapers from the phones in the topic title and uploaded them to picasa web. You can actually find them all over the internet but I just compiled them for easier accessibility for whoever wants to get them. Some of them are very nice, and they do look good on the SGS too.
The gallery will let you download individual files, but if you want the complete folders, you can take them from below. I do not own any of them and all credits goes to the people who have obtained the system dumps so that the wallpapers could be extracted.
Droid 2 R2D2 - http://haxer.org/android/droid2_r2d2_wallpapers.rar
Droid 2 - http://haxer.org/android/droid2_wallpapers.rar
Droid X - http://haxer.org/android/droidx_wallpapers.rar
HTC Desire / HTC Desire HD - http://haxer.org/android/htc_desire_wallpapers.rar
Nexus One - http://haxer.org/android/nexus_one_wallpapers.rar