Well i love a few but here is three.
Sword art online: Well Sword art online was the first anime i watched and i didnt know after i watched it, i wanted to watch it again and again. Oh im still watching it im at 8 times now.
fullmetal alchemist brotherhood: The action and plot is nice, this anime is so good i had to watch it more then four times!
ugly yet beautiful world: Well i love the way takeru gat powers