Supreme Court of Canada Commentary
Osgoode Hall's Supreme Court Law Review
Can be found: at their website here.
If you're interested in reading experts' commentary and analysis on Supreme Court decisions, Osgoode Hall's Law Review is a useful resource. The journal's content is drawn from Osgoode Hall's annual Constitutional Cases Conference from 2001-present.
Because of it's specific scope, this journal is best used if you're looking for research or commentary on a specific Supreme Court decision.
Searching the journal:
With so few volumes, it's much easier to browse by volume.
Look for the volume published the year AFTER whatever Supreme Court decision you are interested in. Then you can browse the articles in that issue, or use CTRL + F to quickly scan for a keyword.