I've watttcchhedd... hmmm, Outlaw Star, Fullmetal Alchemist, Fullmetal Panic! (Fumoffu & TSR as well), Trigun, Rurouni Kenshin, Cowboy Bebop, Sayuki (& Reload), Dragonball (The original, Z and Grand Tour), Naruto annndd I think I'm missing a couple, but oh well.
Anyways, DBZ's opening song, and infact, all of the music composed for and played in that anime, is totally kick ass. I'd pick any one of those if you want something exciting or suspenseful. All the other anime had typical japanese pop trance/rock opening and endings, except Trigun, which has this sorta oldies badass rock song and Rurouni Kenshin, which has something else that I don't quite remember =/