That's a pretty unique movie, but try:
Air: The Movie
5 Centimetres per second (there's a pile more by this director, too)
Cat Soup (30 minute short film)
EDIT: Maybe you should look at some OVAs and shorter series then? I can't really think of any other feature films which are in this same vein and haven't been mentioned.
Some shorter (nothing over 13 episodes), fun series that come to mind (for me) are:
Yokohama Kaidashi Kikou (2 eps) & Yokohama Kaidashi Kikou: Quiet Country Cafe (2 eps)
ARIA
Usagi Drop
K-On!
Macross Zero (5 episodes)
Kanon 2002
Sola (similiar to Air, written by Kanon's main writer)
Gunslinger Girl
Zero No Tsukaima
Nyan Koi!
Strike Witches (if you can handle the rather blatant fan-service it's a lot of fun)
Kashimashi (Yuri romance comedy)
Rosario + Vampire (very cute but a fan-service warning too)