Roomies (1987)

A summer sitcom about the up and downs of two unlikely college freshmen. Nick Chase (Young) is a middle-aged Marine drill instructor who wants something more out of life than what the military can give him, so he leaves the military and goes to college at Saginaw University. His roommate, Matthew Wiggins (Haim), is young and bright but also looked upon as nerdy. Every week, the two learn from each other (mainly, Matthew learning from Nick) and get past life's tough challenges.