Here's a documentary on Max Beckmann which I found here. It's a BBC documentary, so some groans and eye rolls are to be expected. But for simply getting a big boatload of Beckmann, it's enjoyable to watch.
Update: Though it may be true that Beckmann sought to "compete" with the likes of Picasso and Matisse, when the host says that Beckmann rethought his original position on their work, it is not true. He despised their work to the end of his days.