Sony's The Vow, starring Rachel McAdams and Channing Tatum, may narrowly beat Universal's Denzel Washingon-Ryan Reynolds starrer Safe House at the Friday box office, but the weekend race is far from over. What's known for sure is that both films are

"The Vow": On paper, the new film "The Vow" might seem like a rom-com juggernaut, with swoony leads Rachel McAdams ("The Notebook") and Channing Tatum ("Dear John") and a story inspired by true events. But so far

— What you should know: Rachel McAdams and Channing Tatum play young marrieds in Chicago. When their car is slammed from behind, the wife is ejected through the front windshield. She physically recovers but has no memory of her courtship,

— What you should know: Rachel McAdams and Channing Tatum play young marrieds in Chicago. When their car is slammed from behind, the wife is ejected through the front windshield. She physically recovers but has no memory of her courtship,

Sony's The Vow, starring Rachel McAdams and Channing Tatum, may narrowly beat Universal's Denzel Washingon-Ryan Reynolds starrer Safe House at the Friday box office, but the weekend race is far from over. What's known for sure is that both films are