NegaPosi Angler - though about fishing, it's largely about forming human bonds, and plays off of the fact that people who fish tend to share an instant bond with each other.

Hanayamata -five girls who form a Yosakoi dance team - easily one of the most adorably uplifting and satisfying anime I've ever seen.

Sabagebu! - Survival Game Club - combat games with AirSoft guns - very stylized and often surreal and very funny in a sort of Nichijou vein.