What are you in the mood to see?
I have seen Boogie Nights, Eyes Wide Shut, Donnie Darko (actually own this I think), and The Machinist.
One of those does not belong; Boogie. The others are all on the more serious side with a bit or darkness.
I found Manhunt interesting, it is a series about the Unabomber. The other along the same lines is Mindhunter which is about the FBI profiling history.
iZombie was pretty funny, first season anyways. Oh, how about Black Mirror? Bleak, dark, and very eerie.