I used to have a list of dramatic soundtracks that were on my possible to use list. Sadly I lost it...but I do remember a couple.
The Gladiator...check it out on youtube. The music is quite dramatic. Almost anything by Hans Zimmer is good.
Red Dawn was the newest addition. I really liked that soundtrack.
Also might want to check out Transformers: Dark of the Moon
Perhaps the 2010 Robin Hood soundtrack.
I've heard the soundtrack for Battle: LA is good but I don't know for sure...same with Battleship.
Anyways, I usually just go around on Itunes and Youtube listening to music that catches my ear...on Itunes I go to Soundtracks and listen to the newest music. If you go there and look up something like one of the soundtracks listed above then they will give you a list of similar soundtracks so I also listen to those. I will listen to the previews of all the songs and if I like it then I will look it up on Youtube to listen to the whole thing. Good luck!
DRESSAGE, n.: the passionate pursuit of perfection by the obsessively imperfect -Author Unknown