This article describes how to install an HD TV Antenna to get free over the air channels, so you can get rid of the cable or satellite subscription.
Here is my TV Fool report. Note that some channels are not listed (e.g. CBC), but it provides you with an approximate list of what channels you can get, what power each is at, and which direction to face.
The nearest intersection for me is Fischer Hallman and Erb St W, in the west end of Waterloo.