What modifications for Oblivion do you use, if any? I use the Natural Enviroments 1.1, Oscuro's Oblivion Overhaul 1.01, along with a few mods that add more music to the game, change the main menu, and make using marksman more lethal against enemies. I also use the Balor Levelling Mod, which makes it so your attributes go up by advancing in skill points, rather then a level-up screen, I may or may not get rid of that mod, as I'm not sure if it conflicts with bigger mods or not.
I use the BTMOD that changes your UI around, I use the Unofficial Equipment Rarity Mod that tones down the appearance of rare items (glass, ebony, elven, daedric etc items), some small tweaks like passive wildlife, arcane and arrow velocity, saddle bags and a talos plaza house mod.
Oh, yeah, I have that UI mod, too, along with a mod that makes the Oblivion map in your Inventory screen (whatever you want to call that whole thing) colored.
Yeah the colored map is much nicer too, I thought it was part of the recent BTMOD version so I have that as well.
I use the UI mod, the normal map fixes and the texture fixes to make the land look less like pea soup in the distance. I use the tweaks from the tweakguides guide and I think I may download some more.