2 more major Canadian retailers have them now
In my travels yesterday I saw that here in Delta, BC, there are 2 more major national chain stores carrying DTV Converter boxes:
Superstore (a Loblaws chain): RCA DTA800 (see Posts #765 & 795 for member reviews)
Zellers: Craig CVD508
If you live in a DTV area and want to try one out you should phone first to see if they have them. They are competitively priced with other brands and stores, but frankly I don't know much about whether those boxes are any good or not. So far the consensus is that the Zenith DTT901 is still the benchmark.
I didn't even know Craig was still out there... I had a Craig car stereo back in the '80s.

The Craig boxes at Zellers had stickers on them saying that they had been imported from the U.S. and that Canadians should disregard the labeling about "coupons", in reference to the U.S. program.