LFO (2013) -
I didn't know much about this movie going into it, other than the fact that it was sci-fi, Scandinavian, had something to do with sound (based on the name), and that MonnoM suggested I watch it. Early in the film I was surprised when the main character started talking about Tinnitus, because I've actually intermittently suffered from that condition since I was a kid. It's mostly irrelevant to the plot, but I just wanted to point out what a strange coincidence it was.
Most of the film is intentionally dull (in tone, colours, and pacing), but managed to keep my interest with Robert's increasingly daring experiments, and the occasional laugh or quirky moment. Just when the movie felt like it was going on for too long, there's a shift in tone and character motivation that keeps things fresh for the final act. Despite being rather dark at face value, the end is actually pretty light-hearted and funny. Or perhaps I just have a sick sense of humour.