I believe the unofficial Ontario record is the Dryden buck (unofficial because it was poached). But that was a couple of years back, and it wasn't an 8 (actually its pretty ugly, I've sen it in person, lots of mass at the bases,and stickers).
The biggest Ontario buck recently has to be that monster with the drop tine out of Kenora, but I can't find the pic on this computer, I'll post it monday from work, its huge, and was takenlegally,but it also hasmore points than 8.