This comes as a surprise to some but little did many know, his father, Tom Harmon, was a Heisman Trophy winner and broadcaster. Mark played football when he attended Los Angeles' Harvard School ...

Several years before making his debut on Ozzie's Girl, Mark, then barely a high school student, made his commercial debut for a Kellogg's ad, alongside his dad Tom Harmon. Tom, who passed away ...

Rodriguez/Getty Mark Harmon wasn't originally too fond of his ... Harmon confirmed he had just started high school at that point. “So I'm picturing my own kids. Would that be embarrassing ...