Zoku Natsume Yuujinchou: 3D Nyanko-sensei Gekijou

Short 3D animations of a title/mascot character doing a funky dance to complement the main show like a small cup of unnecessary and badly made espresso after a satisfying and fulfilling main meal. 

Although slightly differently executed, these short clips have some features in common. Neither were particularly funny nor will you feel like you're missing out, but you will most likely think "why wasn't this executed better". Both Sukitte Ii na yo and Z. Natsume 3D didn't quite hit the mark, but they're still somewhat enjoyable.