"Big Eden" is sweet and has an interesting premise that was fun. And I think "Greek Pete" is brilliant. It purports to be a documentary, and does feature Peter (who gets a producer credit) and friends in real or semi-improv scenes, and it shows a slice of life among young gay London rentboys, more or less culminating when the title character goes to Vegas to collect his Escort of the Year award. An interesting look behind the scenes at a professional escort, a handsome man who is well paid to have sex for a living and is at the top of his profession as a result of hard work and dedication doing what he likes doing and genuinely wants to be the best at.
"Screaming Queens" is a documentary about the Compton Cafeteria riots in San Francisco where drag queens and others fought the same battle that – three years later-- made the Stonewall Inn famous. It's a piece of history that deserves to be much better known.
As others have noted, if you would name a few favorites to provide clues to useful suggestions, there may be more and better responses.