This is the best anime movie from a TV series that I've seen. KyoAni's love for their craft is strongly felt here in a beautiful and emotional piece. All the good of Haruhi improved while trimming all eye-roll moments.
The Melancholy of Haruhi Suzumiya
Haruhi has its own fun thing going on. It doesn't "feel" like really any other anime, and that's part of what has made it a mainstay of anime history. That, and a very notorious arc. I really enjoyed this one.