I came across a template in Photoshop for those who like to see how the wallpaper will look in landscape, portrait and as lock screen and background for apps. You can download the template here: Intridea Blog: iPad Wallpaper Template for Photoshop Good luck!
i made this ipad mockup, which has the icons and a transparent background, so you can try out your wallpapers on your PC. I still need to go back and finish up the edges, but i'm too lazy right now http://img541.imageshack.us/img541/5549/guidei.png
Good idea! - You can always just create your wallpaper in 1024x1024 resolution. Either way always make sure that your most important content is in the middle. That way whichever way you spin your ipad, you'll see what matters most
The real trouble is that the wallpaper is usually covered with random garish icons which detract from it's impact. It's just not as important as it's desktop cousin.
i have seen many of you provide before, but really thanks, really nice wallpaper here...i will send these perfect pictures to my ipad friends...ahha