I've been into oddball/music documentaries lately, and recommend:
The Institute (2013) - IMDb
Doc about an alternate reality game (ARG) art project that happened in San Francisco, shot partially as part of the game, so some of the interviews are with real people and participants, and some are actors in character. Leaves a lot of questions unanswered, but captures the feel of being part of the game.
Big Star: Nothing Can Hurt Me (2012) - IMDb
Doc about a band that never quite made it, but influenced lots of people in the 90s. Very interesting look at some very interesting people.
The Punk Singer (2013) - IMDb
Doc about Kathleen Hanna, singer of Bikini Kill and Le Tigre, and one of the originators of the "riot grrrl" movement in the 90s. Obviously a lot of focus on being a woman in aggressive music in the 90s, but also about why she got out of music and her health problems.
The Bling Ring (2013) - IMDb
Sofia Coppola film based on true events, about kids in Hollywood who break into celebrities houses and steal their stuff. Interesting movie, considering almost none of the characters are likeable
I'm a fan of Sofia Coppola's style (quiet, slow) but I'm sure it's not for everyone.