Matt Damon reveals the exact moment he realized he'd made it "After Good Will Hunting, I remember going to Calvin Klein and buying like 20 pairs of boxer briefs." "A salesperson came running out insisting she give them to me... I said, 'No, no, no, I really need to buy these. This is a rite of passage for me.'" "She wouldn't let me buy them. She said, 'I might get fired if they hear that you had to come in and buy underwear.'"