Does anyone know of any good opera-like songs that can pump you up?

I was looking for some opera-like songs that are really nice sounding and really pump you up. Some examples of what i'm look for are Navras by Juno Reactor - http://youtube.com/watch?v=t9qqLrdOzDg or Returns a King from the movie 300 - http://youtube.com/watch?v=WSu9T0f6q3Y or even old operetic songs like Confutatis (http://youtube.com/watch?v=p6VzZYvli7A&feature=related) and Dies Irae (http://youtube.com/watch?v=M_YSEbAWA0Y&feature=related) by Mozart. Can you please post some songs that sound kinda like this?