(When asked this question recently everyone went for Shawshank redemption but i will resist :-)
In no order: Patton, The Quiet Man, Saving Private Ryan, The Great Escape, The Good the bad the Ugly, Back to the future, St. Elmo's Fire, Godfather, Ben Hur, (5 is NOT enough) City Slickers, Matrix, Schindlers List, Eat Drink Man Woman, Shakespeare in Love, Ferris Buellers Day Off, (I'm a film addict, could do top 100 if requested) The Longest Day, All quiet on the western Front, Where Eagles Dare, Waking Ned, Sliding Doors, Brassed Off, Catholic boys, Heartbreak Ridge.............. and there's more........