One of the reasons I bought a Motorola Defy was that it had a 'Gorilla Glass' screen that was scratch resistant. For me, working in the construction industry, that's important. Within a week the screen was slightly scratched. I bought a pack of 5 of these screen protectors. Each comes with a little cloth to clean the screen before application, is easy to apply and fits perfectly.
The protector has been on my phone now for a month and shows no sign of peeling off, despite quite a lot of hard wear and tear, including being in the rain. I was told they would make the screen less touch-sensitive, and they haven't. What they DO is make the screen less scratch sensitive AND less prone to getting fingerprints on.
I'd happily buy these again, if I ever run out! Buy them as soon as you order your phone, they're worth it. Recommended.