In my humble opinion, nothing beats the original The Parent Trap, starring Hayley Mills as a pair of separated-at-birth twins who are reunited in dramatic fashion at the Summer camp of my childhood dreams. Sure, the movie is about as old-fashioned as you can get (the dressed-up dance with the boys' camp from across the lake is from a time gone by), but it's still as charming and fun today as it was in 1961, so prove to your kids that retro can be cool.