I am currently watching Modern Talking's "Win The Race" video - fire, lightning and marching Germans - with the sound off, while "Grinder" from Command and Conquer 2 plays in the background. They go disturbingly well together.
Also, Dream Theater's "Scenes from a Memory" (which is still the best title for anything ever) becomes more of a work of genius every time I hear anything from it - WinAmp just randomly selected "The Spirit Carries On". I'm going to have to sit down and listen to the whole thing in the right order.