If you loved Greetings, try Hi, Mom!
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Brian De Palma, and they both carry the outsider mood tag, and they sit in Comedy territory. If that's the register that drew you to Greetings, the second film will land in a comparable space — through a different lens.
outsider
What Hi, Mom! is
De Palma here seems to be workshopping his later, better films. A Vietnam vet with voyeuristic tendencies returns to New York and begins filming his neighbors, before joining a Black Power group and engaging in terrorism. It's all very of its time, for good and ill.

