If you want dramatic look no further than Wagner. His opera cycle "Der ring des niebellung" (probably spelt that last word incorrectly) is pretty damn fierce. I'm not into opera personally, but the music is great and you can get a version of it on CD called "The Ring without words" which is just amazing.
It's on Amazon here
Amazon.com: Wagner: The "Ring" Without Words: Richard Wagner,Lorin Maazel,Berlin Philharmonic Orchestra: Music for just nine dollars for almost 70 minutes of music: can't be bad!