The song "Excalibur" is really good. I love the violin riff near the end of the loop. I think the anime used it to its maximum effect though. They timed the riff perfectly in sync with Rider's Bellepheron, making it really dramatic and the countering Excalibur so much more epic.
Well I'm not sure if I would have loved that song as much under other circumstances. But while reading the fight between Shirou and Gil that track enhanced the epicness of that fight by a big margin. And since then I have a Pavlov conditioning reaction to it... Just hearing it make me go all fan boy all over again.
The magical energy emitted against the mere human called Tohsaka Rin is OVER 9000!!!!!