Boasting what is arguably one of the best power systems in shonen anime as a whole, Fullmetal Alchemist: Brotherhood is chock-full of great fight sequences. From gruesome one-sided affairs to innovative contests of wits and even one of the best one-man army scenes in recent history, the more faithful anime retelling of Hiromu Arakawa's immensely successful manga series has more than enough jaw-dropping showdowns throughout its 64-episode run.