State and Main, 2000
When it comes to satire, there's so much about the movie business that can be used as material. One great example is David Mamet's 2000 comedy State and Main. A fantastic ensemble cast including Philip Seymour Hoffman, William H. Macy, Alec Baldwin and David Paymer deliver lines that hilariously cut Hollywood's disingenuousness and pomposity to the bone.
Read a list of 50 films that focus on Hollywood and the movie business in this article. (Warning: a clip of Siskel and Ebert autoplays on the page, but can be stopped or paused.)