There are always good options!
Start with some Golden Examples (Just ones i Personally have Seen 2x+):
Cowboy Bebop, Fullmetal Alchemist Brotherhood (Follows Closer to the manga than Regular Fullmetal Alchemist and is much better in my opinion, though most people agree brotherhood is a more enjoyable watch), Angel Beats, Hunter x Hunter, Kill la Kill, Eureka Seven, Ghost in The Shell, Steins; Gate, is this a zombie?, Irregular at Magic Highschool, Strike the Blood, Btooom, Blood+, Gate Thus the JSDF Fought There, Kenichi the Mightiest Disciple, YuYu Hakusho, K-on!, Sword Art Online, Sekirei, Overlord, Shimoneta, Highschool DxD, Cardcaptor Sakura, Berserk, Hellsing Ultimate, To Love Ru Series and the Monogatari Series
The super popular ones arent the only good ones though! I also Enjoyed ones like these: Nura rise of the youkai clan, Interview with monster girls, Seitokai Yakuindomo (One of my Personal Favs!!!), Campione, dance in the vampire bund, Love Lab, Tayutama- Kiss on my Diety, Gosick, Tsubasa Reservoir Chronicle, Renkin-san Kyuu Magical Pokaan, Magikano, Maburaho, Witch Craft Works, Tonari no Seki-kun, Namiuchigiwa no Muromi-san, and Working!!
They're all good!!! Give these a try your bound to find a few you'll love!