I've watched Fullmetal Alchemist, Fullmetal Alchemist: Brotherhood, and Death Note.
fullmetal alchemist was very interesting and has a ton of dramatic emotional scenes, fullmetal alchemist: brotherhood was HOLY loving stuff INCREDIBLE JESUS CHRIST WATCHED IT THREE TIMES IN ONE SITTING, and Death Note was amazing and kept my attention the entire time and caught me off guard a lot. I would watch it again but it's not the same experience as watching it the first time because you know everything and ahh. i can only watch FMA/FMA:B more than once because they're just that good.