The only reason I enjoyed B Gata H Kei is because it's a brainless ecchi anime that is different from the usual "tons of hot girls in suddenly love with an indecisive guy." I have grown tired of most of the ecchi stuff because it's just so samey (same pattern, jokes, etc.) but that was different and funny. I mean, the main character is a hot perverted but still virgin high school girl who wants "100 sex friends."
I felt like watching some brainless comedy, so that was a good fit.