If I was personifying a hipster that knew a lot about obscure hipster-ish music I'd Say "Here's a band you need to be into: Passion Pit." Then I'd jump on my singlespeed and ride off to buy a vegan brownie.
Really though, Passion Pit is a really good addition to any music colectsch. Their new album, "Chunk of Change," really really is a cut above. Check em out. Passion Pit's sound reminds me a little bit of a cross between Au Revoir Simone and Polyphonic Spree.