Dibella's Watch adds an entire new continent to Oblivion. It comes complete with a major city, castles, towns, villages, farms, monasteries and all the good stuff that makes up a Medieval landscape. There's also fighting to be had and quests to be made!
Here's a goodie. Gruftikus has made better Distant Land LOD for DW, which makes the pointy CS mountains look like beautiful rolling hills finally.
Nice work :D