With Labor Day upon us, we count the life lessons we took away from ''The Dark Knight,'' ''Pineapple Express,'' and ''The Hills.'' No. 16: Kissing girls is totally likable!
Take time off from work, plunk down on the couch with some popcorn and a cold beverage, and let ''National Lampoon's Vacation,'' ''Little Darlings,'' and these 13 other films remind you of all the ways leaving home in summer just trips you up