'Parenthood' Star Craig T. Nelson Looked Very Different In High School

These days, Craig T. Nelson is known for his role as the tough (but lovable) Zeek Braverman on "Parenthood."

But snakkle.com got their hands on his high school yearbook photo, and we can't believe how different he looks. Check out photos of him then and now below:

To see vintage photos of the rest of the "Parenthood" cast, head over to snakkle.com. You won't be disappointed.

"Parenthood" returns on Thurs., Feb. 27 at 10 p.m. EST on NBC.