Have a look at the Air Canada/Canadian board for several recent discussions about Canada 3000.

Canada 3000 used to be a charter airline. They have recently moved into the scheduled market in Canada to compete with Air Canada. They also fly all over the world, mostly to holiday destinations. International flights only have a single cabin, with a very tight seat picth (can be as low as 28"). All domestic flights will have a business class cabin by June. The flights are often scheduled at odd hours of the day, making for very late arrivals and early departures. But the fares are cheap.