It's the entire arena district experience that makes it fun. The hockey games are great, despite the usual outcome, and the atmosphere is electric but the district itself is packed with thousands of people, great bars and restaurants and lots of other entertainment within walking distance. Start the evening at Buca di Beppo for some huge delicious Italian food (or Black and Blue for more upscale) then hit the game. Afterward, stop by O'shaughnessy's for a beer in a beautiful Irish pub filled with boisterous happy fans looking for a good time.
Pros: hockey, bars-restaurants, atmosphere
Cons: leaving the garage, expensive, long waits