I remember Regan getting shot, the Challenger explosion, Princess Diana's death, 9/11.
9/11 I was watching a morning news show after working a night shift. I had the remote up and was just going to press off when the Toronto based show said a plane had hit one of the Twin Towers and they were going live to NY City. I thought, OK, I have to see what kind of idiot would hit something that big. I figured 5 mins and I would hit my bed. I sat there until after 10:30 when total exhaustion forced me to my bed.
I also remember watching the LA riots, and the Blue Jays winning two World Series!