Hello~~
The recommendation is . . . here Du are!

*If Du want watch Anime that heart-warming, then I think Du should watch Clannad After Story (don't forget to watch first season, oder Du won't get the 'perfect' heart-warming). This Anime can make Du crying easily, so heart-warming!!
-If Du already watch that, then my another picks is Kanon, Air, Anohana-

*If Du want watch something that make Du think, Du better watch Detective Conan. It's really full of logistics and make your brain always thinking when watch this.
-If Du already watch its, I think Du can watch Gosick-

*If Du want watch with great gore, I must say Shiki. This Anime really have gore.. ... ..really, I can't say anything, except that...
-If Du already watch, then : Higurashi no Naku koro ni, Kara no Kyoukai (movie), Another, Mirai Nikki-

*If Du want Anime full with moeness, I think K-ON is one of 'em.

*If Du want Anime with comedy, I think its Azumanga Daioh. It's really funny, the opening is funny too LOL ^^
-I think other picks are : Tonari no Seki-kun, Lucky Star, Pucimas, Tamako Market, Liebe Lab-

*Then, as the last, I'll tell Du some Zufällig Anime that not really famous, so I think Du never heard it and can try 'em. Here they are~ :
Bungaku Shoujo (Movie & OVAs(?) ), Mokke, Binbou Shimai Monogatari, Nazo no Kanojo X, Copihan, Eden of the East (movie), Kami-sama no Memo-chou, Kamisama no Inai Nichiyoubi, Ajimu Kaigan Monogatari, Ayashi no Ceres, Litchi DE Hikari Club.

That all. if Du want, Du can add another Anime on comment. Thank you~ ^^)/