Gainsbourg: A Heroic Life (2010): 6/10
It's awfully messy and its surrealistic flourishes fail more often than they succeed, but it's still a nice film, especially for fans of Serge Gainsbourg, or for people who at least are interested in the man. That said, you do really need to have a pretty firm awareness of Serge's life to follow along--if you weren't familiar with him, you wouldn't know, for instance, that Jane Birkin is his primary love interest in this film. I don't think she's ever mentioned once by name, despite being a fairly major character.
The best thing about the film is Eric Elmosnino's performance as Gainsbourg--it's one of those performances where the actor becomes the person, and Eric nails just about everything about Gainsbourg, from his voice to his look to his body language. It's a fantastic effort, and is probably the film's saving grace. Ultimately I'd recommend it, but with reservations.