Very enjoyable courses, some especially good architecture, great price, often busy and sometimes slow and light on the amenities, but fine public golf with (in most cases) no frills at all -- in other words, golf:
Lakeview - Mississauga muni - Herbert Strong
Rockway - Kitchener muni - Stanley Thompson
Doon-Classic 9 - Kitchener muni - Robbie Robinson
The Mines - Grand Rapids - Mike Devries (with the estimable J Hancock)
Copetown Woods - Hamilton - Dick Kirkpatrick
Lowville Golf Club - Burlington - Dick Kirkpatrick
St. Andrews Valley - Aurora - Rene Muylaert
I think there are at least 2 courses on the list, and probably 4, that if they were in England and Sean profiled them, would become the hidden-go-to courses for well travelled golfers past the belt notching stage.