Tom, the first list were on PEI. Metallica with Seether (and others) were in Halifax and U2 with Arcade Fire (and others) were Moncton. Both outdoor concerts. Rained a bit both days but absolutely no one cared.
If you haven't heard of the other's don't fret. "The Hip" actually do pretty well in the US and around the world so I'm a bit surprised about that one, but the rest are a bit more "Canadian" or just a bit newer.
That being said, if you like live rock with energy, you are missing out with "The Trews." While they are best known for their foot stompin, rock tunes, I'll link this one because it just might tug at your heart strings like it did mine. Highway of Heros
Since many of you won't know, the term "Highway of Heroes" refers to a stretch of Highway 401 running from CFB Trenton into Toronto where the remains of almost every slain Canadian solder makes it's way down when they are flown back to Canada. The highway often becomes lines with both veterans and civilians paying their respects to the fallen.
And since I know there are a lot of blues fans on this forum, check out http://www.stubbyfingers.ca/music
. The self assigned nickname in his link is a complete oxymoron to his great guitar skills and as reviewer once said humerously, "and a voice that has no business coming out of a white guy."