Been to 3 NHL barns but only seen games at 2 - The Joe (dozens of games over the years), United Center (4 or 5 games in the last 10 or so years), and the ACC (only took a tour). The Joe is the best of those, hands down.
Last game I saw at UC was a few years back when Toews and Kane were rookies and the bandwagon was starting to take off, they finally sold out their arena that night. The Sharks were on a winning streak, and ended up winning the game against Chicago, after Chicago's last-second tying goal went in off a guy's glove and was disallowed. Everyone in the arena was pissed, and it was CLEARLY not a good goal, but the jackasses weren't having it. My dad, best friend, and I were just sitting there laughing at them. (Found the game - http://blackhawks.nh...p?id=2007021026). Aside from that, the arena was clearly built with the Bulls in mind, and the views aren't nearly as good as they could be.