I got an email from Best Buy Canada, to announce their summer online only sale. It is due to start on Sunday the 23rd of May 2010, at 5pm EST.
I have no idea what will be going on sale, they don't tell me any more information or prices. However, the advertising picture has a TV, computer, laptop and a digital camera so it is likely the range of electronics on offer will be good.
I'll check back on their site later today and try and update this post with a few bargains.
It does say that in-store pickup will not be available during the sale event, but if you spend more than $39 online, you will get free home delivery anyway.