I would like to offer perhaps a slightly different view on this subject. The Oppo is good unit, no question about it. But the question was asked if a copied movie would be upconverted to HD like resolutions. The answer is really a - somewhat and nothing more than that. HD content is considered at least 1080i / 720p / 1080p. A standard DVD only has a resolution of 480p. Although the upconverting will assist the 480p resolution by reading the pixels and adding information to the desired played resolution, there is still only 480p worth of resolution available.
That being said, using the right upconverting player (the Oppo is one for sure), the picture will look better than playing through a standard DVD player. A HD-DVD or Blue-Ray disk, will look marketly better on nearly all accounts (again, depending on the original transfer).