I don't mind Canadian wines at all. In fact some are very, very good. Moray Tawse is really changing the scenery as far as wines and their quality. He always sends me a few bottles a year. This summer I would like to visit his wineries.
Of course, they cannot compete with Old World in many cases. But a lot of that stuff is crap too, built on name recognition and their homelands. France produces 8+ Billion bottles of wine, I would venture to say a lot of junk is from there too.
I personally love California Cab Sauv wines, especially the 20$ bottles. Phenomenal value.
In Italy I have purchased a bottle of wine for 1.40 Euros, just for kicks as it cost almost as much as a 1.5L water bottle. Not bad tasting actually!