Ok, so in 2011 I didn't get to see as many shows as I would have liked; but the ones I was able to go see made for an interesting variety:
Burton Cummings
Anvil
Cancer Bats
3 Inches Of Blood
Arcade Fire
U2 (This one was actually free. The tickets were a birthday gift for my gf from her parents. Not a fan, but it was an impressive show).
Unbreakable Hatred
Fuck The Facts
Misery Index
Napalm Death
Unexpect