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 ...

Mark Harmon's son, Sean Harmon ... serving as an executive producer for the series, along with his father, who narrates NCIS: ...

Both Sean and his dad will serve as executive producers on ... Origins’ Release Dates Revealed By CBS As for Mark Harmon, he’s happy to see another person’s take on the character he played ...