Lot of people have already recommended Clannad (which is actually the best anime I've seen so far), Madoka and such, so let me give you some other ones.
-Tokyo Magnitude 8.0
-Ping Pong: The animation
-Shinsekai Yori
-Katanagatari
-Kara no Kyoukai
-Tokyo Magnitude 8.0
-Ping Pong: The animation
-Shinsekai Yori
-Katanagatari
-Kara no Kyoukai