Nino Leitner has a new short film shot using the Canon C500 and Canon Cinema Primes.
ALEX - short film (Canon C500) on Vimeo

Nino has a blog post with extensive info as well - Canon EOS C500 – Review & short film "ALEX" (http://ninofilm.net/blog/2012/11/25/canon-eos-c500-review-short-film-alex/).

Interesting test. Surprisingly high noise levels and ugly highlights, also not very impressed by the lenses, lots of CA in higher contrast shots. DOF seems distractingly shallow in a few shots as well, but that is subjective of course. I guess the very limited lighting package is partly the culprit for some of these problems? I'm not one to judge camera gear from one video, but it isn't looking great for that package especially considering C500+recorder is >$30k and 1TB/hr is hard to swallow, though there may be workarounds (direct ingest to cineform RAW?)...

Doesn't take much light to get a camera that fast up to a 2.8, where lens issues would improve significantly.

Very nice video.