Mobile Fun have a range of screen protectors but the premium Martin Fields ones are by far the best i have seen. They are imported from Japan and fit perfectly on the Omnia. Not cheap at £13 each or 2 for £18 but if you get what you pay for and they are reusable and dont have annoying air bubbles when fitted.

Mobile fun stock a good range of Omnia accessories and are welll worth a visit for car cradles, chargers (you might need one for the car!), headsets and cases.