Yes, I can confirm that the Netflix code (printed on the receipt from Best Buy) works. I never had Netflix prior to this, so it was a brand new subscription (I realized later that I should have done the free one month from Netflix then added the three months later).
Same here. Bestbuy still shows them as out of stock even online. Google shows shipping in 2-3 weeks but doesn't seem to want to take a Canadian credit card. So I ordered a couple on Amazon.com (which takes my Canadian credit card just fine) and now I'll just wait.
It works well when showing people things on your laptop for example. Can display just a browser tab in chrome or the entire desktop. Not quite sure about Netflix yet - so far I'd rather use my Roku.
I think the way to think of it is like this: the Roku, AppleTV, etc are devices. They have remote controls, interfaces, updates, etc. This isn't really a device, in that way. You can't really control it directly. Instead it's just secondary screen for the devices you already have.