Mine (that haven't even been updated since 2006):
- Realistic Physics and Force (http://oblivion.nexusmods.com/mods/5197)
- Kasdar's Detect Life Shader (http://oblivion.nexusmods.com/mods/3756)
- Coloured Enemy Health (http://oblivion.nexusmods.com/mods/3774)
- Chase Camera Mod (http://oblivion.nexusmods.com/mods/1840)
And until I finish my own overhaul which incorporates these...
- Natural Wildlife (http://oblivion.nexusmods.com/mods/2063)
- LG's Unscaled Enemies (http://oblivion.nexusmods.com/mods/6085)
- G's Oblivion Loot Mod, Unscaled (http://oblivion.nexusmods.com/mods/3321) or (http://oblivion.nexusmods.com/mods/3964)