No.2856
/r/ing good anime films that you need no context for (such as anime, manga or other films that precede it in a series).
No.2858
So nothing with a prequel?
Just about anything from Ghibli. They are #1.
Tekkon Kinkreet
Welcome to the Space Show
Sword of the Stranger
No.2861
Cowboy Bebop isn't too bad to go into without watching the series first.
No.2864
Most of the stuff by Satoshi Kon.
No.2874
A Letter to Momo
No.2879
Mind Game
No.2905
Wolf Children
One of the few I would recommend to non-fans.