I'm looking for another series to watch.

I liked so far:
Legend of the Galactic Heroes
The World God Only Knows
Sayonara Zetsubou Sensei
Tatami Galaxy (And it's sister movie "The Night is Short, Walk on Girl")
Evangelion
Hyouka

Basically I like anime with smartass, smug nerds who wear glasses and are really good at something or have obsessions.