I was there earlier this year to see Neutral Milk ...

I was there earlier this year to see Neutral Milk Hotel. It was my first time there, and it was a sold-out event. I arrived late so was stuck at the back and couldn't see too well, but the atmosphere and intimacy of the place meant that I still had a really great evening and it was clear that everybody there was a devoted fan.
It's a venue that seems to attract the best bands and also well-behaved crowds, and although it can fit a good number of people in it still manages to feel contained.
Highly recommended!