I know I'm really, really late to the party here, and this may have been mentioned, but I had some time to play with a DOT approved breathalyzer, and 0.05 for most people is drunk.
After hockey, no dinner yet, I put back 1.5L of beer (the equivalent of 5 cans) in 40 minutes, and blew a 0.04. There is no way I would have gotten behind the wheel. 0.08 is really, really drunk.
Here are some other people's results:
http://www.beyond.ca/bill-26-passes-...e-2/11275.html