Bignerd100, I must disagree.
I used to use whatever cable for video... then I bought a Nordost Optix S (S-Video) cable from Sancuary of Sound, and replaced what I was using (Monster M1000) and the difference was clearly obvious even on my ~30" Proscan... While I have not done a significant comparison of component cables (I knew I'd end up using DVI in a short enough time to not bother) I must logically assume their IS a differnce...
Now, on the flip side of the coin... many A'goner's will argue I am on glue and that their is no difference between video cables.... I for one find this a tough pill to swallow when we are a group of people who spend more than many do for all their components on cables, how can we discriminate against video cables vs. audio????