Yeah, definitely watch Berserk. Other really good ones are GunGrave, Trigun, Cowboy Bebop, Samurai Champloo, Bleach, Naruto, Yu Yu Hakusho, Hellsing, Full Metal Alchemist, Neon Genesis Evangelion (currently finishing this one---it's very weird, but good), Hajime no Ippo, and I can't think of...