Baka to Test to Shoukanjuu, Kami nomi zo Shiru Sekai Recommendations
Both protagonist have extremely annoying screechy voices when they overreact.
So if you like to torture yourself (Darn, you masochists..) Go check it out..
The protagonists are both unique in their own way and their persistence plays a great role when they must overcome tough obstacles (and they're both voiced by the same seiyuu for those that care).
Both anime's are more comedy driven, not really putting a lot of focus on a main story line but they still do have a general plot or objective to follow. In Baka's case it would be Class F trying to become the best in the school and in KamiNomi they are tracking down and capturing all the loose souls.
Similar violent humor. Same bow. Same dealing with everyday life issues in fantastic way.
both anime comprises of the genres-romance and comedy. Both anime are definitely one that you should watch if you want to get a dose of laughter. Also the voice actor for the male protagonist in both series is the same