My list only goes back to 2009 when I got a season ticket:

1 - November 25, 2012 - Grey Cup Championship
2 - November 11, 2012 - Eastern Semi-Final
3 - October 25, 2014 - Tiger-Cats vs. Argonauts
4 - December 12, 2011 - Arrival of Ricky Ray
5 - December 14, 2009 - Departure of Count Chocula