Agree that there are too many to count. The LA come back and LA playoff clincher that also eliminated the Kings, and every playoff win. The joy of every game of the year meaning so much (except maybe game 82). The Stajan goal and the Engelland 1-on-2 fight. So much happiness!
One for me that hasn't been mention was the Ottawa shootout. Only get to see one game a year live because Leafs tickets are ridiculous, as are the Leafs. This year I was on the glass near the hashmarks in Ottawa's end. Got to see an incredible comeback, bruise my palms pounding on the glass and see (IMO) one of Johnny's nicest goals in the shootout. He was literally stick-handling between Anderson's stick and pads! So much fun. Though I would have loved to see a win, I left happy.
Also got to sport a sign featuring this guy

That said "Thank you for watching City TV" (it was on City TV in Ontario, not sure about out west)
couple of camera men clearly didn't get it, or thought it was funny, because I was asked to hold it up, or stop so they could film it twice, but I think it was caught by someone editing for tv, because I haven't heard of anyone seeing it

Lots of comments from fans of both teams though