These are the best i found online. If you got better ones, throw them here, everyone including myself would cheer.
The better ones are the ones with text, those or just ugly and unusable.
Um… the poster art for just about any movie can be found textless in high-res. You know, because the titles were usually put on after it was painted. Blu-Ray.com has a whole lot of high-res textless poster art. And also, the only ones that seem horribly affected by any photoshop antics are the DVD covers, and those were just photoshop messes to start with. Most of the other ones seem like fine original artwork without text, though the ESB Advanced one looks kind of weird and may have been shopped. I can’t tell looking at my moniter right now.