Mike Figgis (Leaving Las Vegas, Hotel) directs Megadoc, a feature-length fly-on-the-wall documentary about the making-of Francis Ford Coppola’s polarizing self-funded epic Megalopolis. The doc proves that cinephiles and critics alike weren’t the only people puzzled by last year’s movie – everyone featured in Megadoc is trying to make heads or tails of Megalopolis, including Francis Ford Coppola. The documentary is as much about Megalopolis as it is about collaborating with Coppola. The interviewed cast and crew are ecstatic to be…