Behold these lovely screenshots and videos from Skywind, the ambitious fan-driven project to mod all of Morrowind in the world of Skyrim.
The project is already pretty stunning, but they have a ways to go. The modders are posting about their plans and goals on the forums of Morroblivion, a site designed to re-create Morrowind in Oblivion.
(And in case you want more Elder Scrolls recreations, it looks like they're making Oblivion in Skyrim too: You can see the Imperial City from Oblivion in one of the videos below.)
Skywind Development [Morroblivion via PC Gamer]