I thought they sounded fine, other than it being a little quiet at first. A little heavy on the new stuff, but whatever. The club was definitely super-crowded. I've seen it worse, but not often. I thought the band looked like they were having fun - moreso than I expected. By the end of the night they were tearing it up. I wasn't disappointed at all. Great fun.
We call the jazzercize guy "the whooping guy." He's at just about every retro-show, dressed exactly the same, jumping around like crazy and screaming "whoop! whoop! whoop!" throughout the evening. I pointed him out to bearman at the Echo show, although he was a little more reserved that night.