Keisuke Sannan from Hakuōki: Shinsengumi Kitan
Keisuke Yamanami from PeaceMaker Kurogane
Both are actually based on the same historical person and it seems like, so far, that every interpretation I've seen of this shinsengumi member is sporting glasses.
*~Cosplays in progress~*
Masamune Date - Sengoku Basara
Eren Yeager (casual outfit) - Attack on Titan
Levi (suit) - Attack on Titan