Tesagure! Bukatsumono/Tesabu is one of the best comedy anime out there.
If you like gdgd Fairies then you'd like to know the script guy for season 1 of that show (Koutarou Ishidate) is the creator of this show. It is also animated in MMD, but this time with more proportional anime girl models, as opposed to SD fairies or robots. You will see that the show actually requires more accurately-rigged and articulated models to pull off its physical gags...
This show is basically Ishidate humour refined to an art. I would also describe it as a meta and absurdist take on girls-group SOL anime, but it also takes on many other genres and the Japanese culture of school clubs and festivals.
It has tons of adlib and the seiyuu have great chemisty with each other. A lot of their real personalities shine through, the show basically becomes a podcast when they get very into the adlib, to the point where it takes up half of some episodes' runtimes. When they laugh you can't help but smile as well, they really drive each other crazy though, and there's a lot of talking over each other and a natural flow of converstaion in those segments. Also one of girls is voiced by Karin Ogino (who played Akiba Yellow) in her only anime role.
And all the (11 minute) episodes are up right now!