A somewhat old itunes playlist I have of CDN bands includes :
Alanis Morissette
Arcade Fire
Avril Lavigne

Barenaked Ladies
Bedouin Soundclash
Big Wreck
Blue Rodeo
Broken Social Scene
Brian Adams
Bruce Cockburn
Chad VanGaalen
Chalk Circle
Chilliwack
Cowboy Junkies
Daniel Lanois
Faber Drive
Feist
Frozen Ghost
Gordon Lightfoot
Gowan
The Grapes of Wrath
Great Lake Swimmers
Harlequin
Hayden
Honneymoon Suite
Joni Mitchell
Kathleen Edwards
Kim Mitchell
Loverboy
Martha and the Muffins
Men Without Hats
Neil Young
Nelly Furtado
The New Pornographers
Nickelback

The Norhtern Pikes
Platinum Blonde
Pursuit of Happiness
Red Rider
Rush
Sarah McLachlan
Sloan
Tom Cochrane
The Tragically Hip
Treble Charger
Trooper
54-40
Even though it is 100% ConCan I still enjoy this playlist.
Some of my favorite Canadian bands of the last 5 years aren't on my CDN playlist would be :
Elliott Brood
Ohbijou
Owen Pallett
Dan Mangan
Japandroids (fading)
Patrick Watson
Rural Alberta Advantage
Crystal Castles
Anyone else miss this show :
http://www.youtube.com/watch?v=7atbb2kHH4k