As the title says, i've been looking around and found the tamriel rebuild mod which is great, but also left me hungry for more!
I'm sure there are plenty of mods that add cool dungeons or landmasses to the game, so shout up with your favourite :wink_smile:

The Neverhalls, lore freindly dungeon romp http://planetelderscrolls.gamespy.com/View.php?view=Mods.Detail&id=6270

There is a Mod called Dulsya Isle, it's about a big island south of Morrowind. It's really big and fun for exploring, but not very detailed.
It's nice to finish, though, there is plenty of space to add a village, or some other constructions... Check it out, but don't expect too much.

Link:
http://dulsyaisle.nickj.net/