Maria†Holic, Arakawa Under the Bridge Recommendations
Well, these two series are quite absurd but in a rather fun and amusing way.
Both series has a ALOT of comedy, gags, and a strange cast of characters. With these cast of characters comes forth comedy, drama, and romance although presented in a peculiar way.
Both series' OP songs are very catchy. Additionally being part of Shaft, expect strange humor delivered to your eyes with a stranger story that is worth the watch.