I came across this article this morning that's certainly worth a read and should generate some pretty interesting debate.
I agree with part of the article, but not all of it.
For starters, IMO the least lively venue has to go to either Brown's Meehan Auditorium or AIC's Olympia Ice Center.
Also, I'm surprised that Cornell's Lynah Rink didn't even get an honorable mention. That place can get really crazy....both in a good and a bad way. Not to mention a fun place to see a game, especially when Harvard is in town.