It took a while until I bought a CD of times Nickelback, since I have heard of commercialism and not a real rock music again. But success does not necessarily have anything to do with inferior quality. The music is just fine - guitar-heavy and powerful voice. The Canadians present here really good rock.
Highly recommended are: Rockstar, Photographer and Far Away.
The bonus DVD is worth seeing, especially for those who do not know the video.