I know I'm a little late on this, but here's my suggestion for the "How Did This Get Made?" movie.
Jason joins Twitter. Within a few weeks he has 100 million followers and becomes the most popular celebrity on the planet. He immediately quits the podcast and uses his new-found wealth to indulge all of the sick and twisted fantasies he's been harboring his whole life.
Meanwhile, tensions rise between Paul and June as they try to replace Jason on the podcast with a series of increasingly unfunny co-hosts. Matters escalate to a "War of the Roses" style throwdown and the podcast is eventually disbanded. Jason's wild ride finally ends when video surfaces of him laughing hysterically while watching a Jay Leno monologue.
Many years later, the 3 are reunited for a final "How Did This Get Made?" podcast. The film they are reviewing is "The "How Did This Get Made?" Movie" starring Justin Bieber, Ke$ha, and Jaden Smith.