Starting up Doom 3 after installing patch 1.3 and patch 1.3.1 on a 64-bit Windows 7 operating system yielded me the fantastic result of a flickering screen. Almost akin to trying to play Doom 3 in a tornado consisting of black line-shreded paper.
I've reinstalled, re-patched, ran in administrator mode, and tried using the non-Aero theme but nothing worked.
I stumbled across this wonderful little app called RivaTuner. Here's the forum link I found to fix the scrolling flickering problem that plagues OpenGL based games in Windows 7.