A few nice royalty free image images I found:
iPhoneJM_wallpaper_0112
Image by IamJomo
Royalty free image cropped for iPhone/iTouch wallpaper
iPhoneJM_wallpaper_0109
Image by IamJomo
Royalty free image cropped for iPhone/iTouch wallpaper
iPhoneJM_wallpaper_0133
Image by IamJomo
Royalty free image cropped for iPhone/iTouch wallpaper