One Piece is fine, Bleach has been awful, Naruto's for kids and Pokemon is plain awful. Don't go on wasting time on those, expect for OP. Want better material? Check out my recommendations: Death Note, Planetes, Steins;Gate, Welcome to the NHK, The Melancholy of Haruhi Suzumiya, Code Geass, Fullmetal Alchemist: Brotherhood, Natsume Yuujinchou, Mononoke, Kara no Kyoukai, Bungaku Shoujo, Redline, Eden of the East, Durarara, Nitaboh, On Your Mark, Kuuchuu Buranko, Detroit Metal City, Fate/Zero, Princess Mononoke, Tengen Toppa Gurren Lagann, Darker Than Black, Final Fantasy VII: Advent Children Complete, Sword of the Stranger, Spice and Wolf, Yojouhan Shinwa Taikei, Karigurashi no Arrietty, Ergo Proxy, NANA, Eve no Jikan, Aoi Bungaku, Akira, Bakemonogatari, Usagi Drop, Mushishi, Gankutsuou, Mahou Shoujo Madoka★Magica, Baccano, Petshop of Horrors, Samurai Champloo, Paprika, Ga-Rei:Zero, Tsumiki no Ie, Katanagatari, Toki wo Kakeru Shoujo, Xam'd: Lost Memories, Kino no Tabi, Ghost in the Shell, Spirited Away, Kami nomi zo Shiru Sekai, Perfect Blue, AnoHana, Howl's Moving Castle, Eureka Seven, Paranoia Agent, Whisper of the Heart, Ayakashi: Japanese Classic Horror, Mawaru Penguindrum, Cowboy Bebop, Golden, Kimi to Boku, etc.

Also, if you prefer long stuff that much, check out Monster and Legend of the Galactic Heroes.

Finished Watching Death Note.Will try the others ASAP.I guess I'll start with Code Geass.Arigato No Name

If you liked Death Note then there's a chance you'll like Code Geass, too. Both are quite similar in the intellectual stuff, though Death Note is far better. By the way, those series/movies/OVAs I recommended you may have sequels/prequels too so if, in future, you get to encounter such material, just look for them and watch them too. Try and take the help of this site as it is quite reliable and accurate when it comes to giving information on such matter. Enjoy.