The Disaster Artist
I had no idea what this was about going in. I think it's better that way in hindsight. The movie is the (mostly true) tale of the making of the world's worst movie. The film was adapted from a book authored by the co-star and best friend of the producer/star, Tommy Wiseau.
Going in, I thought it was a joke movie made by the Franco brothers (with assists from their Hollywood friends: Seth Rogen, Paul Scheer and his wife June, Judd Apatow and others). Then Franco hits the screen with his ridiculous hair and accent and I am convinced that I'm watching at best a Hollywood inside joke or at worst a deliberate attempt to make a horrible movie a la Sandler's Jack and Jill.
Long story short: Wiseau is a curious figure about whom very little is known. He makes friends with a guy from his acting class, Greg (the co-author of the book), and they move to Hollywood to pursue their shared dream of stardom. Failing to catch a break, Greg wistfully wishes that they could just make their own movie. Tommy ponies up the cash (estimated to run in excess of $6M) to produce a script he self-authors and casts himself and Greg as the leads.
The production is, naturally, a fiasco and the film premieres to a packed house who laugh riotously at Tommy's very serious production (the movie is about a love triangle and the betrayal of Tommy's character.) The movie grossed $1800 during its two week run (Tommy paid to run the movie in one theater for two weeks to qualify for Academy consideration) and disappeared into the annals of film history. Except that it has become a cult-classic with a rabid audience. Tommy hosts midnight screenings, signs autographs and generally relishes the star-role he envisioned for himself even if his route there was more circuitous than he dreamed.
Ultimately, no one but Tommy (despite repeated attempts to suss out the truth) knows where he's from, how old he is or how he financed his movie.
Watch the split screen moments at the end when the current cast's performances are laid alongside the original footage. During the Disaster Artist I was convinced that Franco was deliberately laying an acting egg...until I saw the original scenes with Tommy.