Absolute HD Mod - full compilation of best graphic mods for Doom 3. Warning: RoE not supported.
This really hurt my eyes. Some stuff are really nice improvements like high res textures but others proved too problematic to me. Also had a lot of performance problems (gtx 470 core 2 quad q9550 OC to 3.14GHZ) the mod has some nice features such as widescreen support but needs some serious work where lighting is concerned (too red and shiny it really hurt my eyes to play)