gdgd Fairies, Tesagure! Bukatsumono Recommendations
Same director, same no-budget MMD animation. Plenty of ad-lib, seiyuus telling bad jokes and going out of character. "I think this is a pretty weird thing to be recording at ten in the morning."
Tesagure Bukatsumono will probably come out as the stronger of the two, but Gdgd Fairies is likely the easier one to get in to as it has less metahumor, banter and bullying but more slapstick instead. The cruder visual style of Gdgd Fairies is also likely to be easier for a newcomer to accept.
Voice actors improvising jokes, CG graphics. Both are extremely funny and esoteric at times.