There's no defining what makes a film become "iconic" but you always know when you've watched one. With the potential to transcend time and stay relevant long after the credits roll, they have something unforgettable about them — and they're usually the movies that everyone rewatches a hundred times and then quotes for an eternity.
Case in point: we bet you know where the lines, "You're terrible, Muriel," "Show me the money!" and "I'll have what she's having," come from, right? (If you don't, see yourself out.) The movies that provided those lines, and the 14 others below, may be different in nature but they all had the same je ne sais quoi that's held them in our hearts ever since. They're also all on Stan right now, so we insist you get yourself a comfy seat on the couch and queue these babies up. They're practically essential.