I don't normally use screen protectors on my electronics. Most screen and body protectors require liquid for a smooth application, and the application directions warn you to remove the battery and keep the device turned off for a couple of days until the liquid has all evaporated. That's great, but Apple iPhones and iPads don't have removable batteries, and I'm afraid of frying my expensive device during the wet application. I've seen a couple of dry-apply screen covers, but they are usually for small devices. The companies that make those dry-apply skins often have iPad-sized screen protectors, but they always seem to say that liquid
The Gadgeteer, Wrapsol Ultra Screen Protector for iPad 2 and New iPad Review