Bought 1 indoor antenna $70 attached to the living room HDTV. Found a sweet spot where I can get the 3 existing OTA HD channels - CBC, CTV, Global - but it's an awkward/ugly location for the antenna. A more unobtrusive location gets 2. Can't wait for CTV to go full power.
Home brew HD recorder (for lack of a better description): Bought an Elegato EyeTV $250 and indoor antenna $70, attached them to an existing iMac. Good software included, but no Canadian EPG. OK schedule from ATSC signal, can record program in schedule or based on start/end time. Records unaltered digital signal to hard drive. Wrote a little script to auto-convert finished recordings to high quality divx and copy to DVD-RW. Can watch these in existing PS3 attached to living room HDTV. Can also sometimes stream more compressed divx files via existing wireless router to the PS3, but it can be a bit jerky so this is not really an option.
Another non-essential: Originally just attached an existing divx-capable DVD player to the bedroom PC. However, toy-lust led me to pick up a Mac mini ($850 but I had a bunch of gift cards to help rationalize the purchase) and attach it to the bedroom HDTV via VGA, along with existing wireless keyboard and mouse from the spare parts closet. This was amazingly easy - everything worked with only minor fiddling. Can watch recorded OTA shows on DVD-RW. Also have been downloading torrents to the mini like crazy to watch at bedtime and on lazy rainy days. Also, the DVD player software included with the mini does a great job with normal DVDs. Haven't tried streaming from the mini to the PS3 yet. Haven't tried burning torrented stuff from the mini to DVD yet, but it's possible. Except when running a DVD at high speed (e.g. copying files off a DVD) the mini is really, really, really quiet, even when playing DVDs. And it's small and looks great too. No buyer's remorse here (unlike the Shaw HD PVR!)
With the local HDTV channels for news and network shows, torrents, and rental DVDs, I don't think we need Shaw any more. The 2 things we watch religiously - news and Coronation Street - are available over the air, and we can record Corrie in HD with the Elegato or grab a torrent if we missed something. The extra HDTV channels available from Shaw are nice in theory, but we don't really watch them much, and the picture and sound problems with Shaw cable make the $700 HD PVR, $400 HD box, and monthly charge seem like a real waste.