Ben Affleck and Matt Damon

What would a celebrity friendships list be without Ben Affleck and Matt Damon, our favorite Bostonian bros? These two leading men have know each other since they were 8 years old, and they became especially close while attending the Cambridge Rindge and Latin School in Massachusetts. They formed something of a team, combining some of their finances and traveling to auditions together.

Though they already had some impressive acting credits to their resumes by 1997, it was in that year that they became household names. Affleck and Damon co-wrote and costarred in Good Will Hunting, for which they both took home Best Screenplay Oscars. They only became more and more famous from there.