Nogizaka Haruka no Himitsu Purezza ep. 4
Christmas episode! Haruka in a Santa dress! Haruka and Yuuto alone! YES!
Aoi Hana ep. 1-11
Yes, it's yuri, but it's yuri at its most heartfelt and arguably, its best. Nice slow pace, endearing characters, and an art style that matches the overall feel of the show. A great little series about friendships, first loves, and relationships in general.