Total Recommendations: 6
Both series are adapted from classic or traditional Japanese literature. In Aoi Bungaku, there are 6 stories based on early 20th century novels, where as in Uta Koi, the focus is on the 100 romantic poems from the Heian (794 to 1185) era.
Though this theme is alot more central to Usagi Drop, the second season of Clannad is very focused around family, and most particularly, parenthood. The protagonists in both shows have to balance their tough working lives with their family lives. The presentation of the two is a little different however, as After Story contains alot more drama in comparison to the slice of life pacing of Usagi Drop.
Both are directed by Ken'ichi Kasai and animated by JCStaff. Each show is centered around two characters and their pursuit of an artform (in Nodame it is playing classical music, in Bakuman it is writing manga.)
The Haruhi movie and the Higurashi OVA are of similar lengths (150-160 mins,) yet require the viewing of two prior seasons to understand the stories.
While the overall content of these shows are relatively different, they have a similar vibe in that they both have a fairytale quality to them. Tutu is a very focused fairytale deconstruction, while Aria uses fantastical elements that bare comparison.
A romance story about separation and distance. Millennium Actress is told with a multi-period movie within a movie concept to add scope, where as 5cm per second is more down to earth. Both also convey different stages of life for the main characters.