I saw Piotr Kamler's Chronopolis back in August and enjoyed it immensely. Once again, I am inspired by the Short Film Blogathon to look into more of his work. Here's what I was able to find online:
Coeur de Secours
Une Mission Ephemere
Le Labyrinthe can be viewed online here.
Of these 4 films I much prefer Chronopolis.