Kind of an oddly specific topic, I suppose, but anyway... 
After six years of integrated GPUs and shitty laptops, I'm finally (finally!) getting a fairly capable gaming desktop, one that I shall at last be able to run Oblivion (my favorite game ever) on with all the texture pack mods and graphical enhancements.  
My question, Giant Bomb community, is this: what are the best content mods out there? That is, the best mods that add new quests, landmasses, etc., as opposed to mere bugfixes, graphical changes and UI overhauls (which are the only things ever listed when I Google "Best Oblivion Mods.") 
(Oh, and please note that I am already familiar with the Nehrim total conversion and intend to install it ASAP) 

http://morroblivion.com/

'Nuff said.