Audiences love romaction flicks, even if the mashup is sometimes a mess. 'Romancing the Stone' 1984 Actors: Kathleen Turner and Michael Douglas Premise: She's a romance novelist who writes about adventure she knows nothing about; he's a soldier of fortune who helps find her kidnapped sister in the jungles of Colombia. Why it works: Turner and Douglas have flawless chemistry, with just the right repartee-to-swashbuckling quotient. Box office: $115 million 'Mr. and Mrs. Smith' 2005 Actors: Angelina Jolie and Brad Pitt Premise: They're married, mayhem-addicted spies who, unbeknownst to each other, are hired to kill each other. Why it doesn't work: The frisson of the couple's real-life love affair, reportedly begun while filming, is unmistakable, but ultimately the ham-fisted stunts extinguish any genuine, subtle sparks. Box office: $428 million 'Get Smart' 2008 Actors: Anne Hathaway and Steve Carell Premise: They're secret agents enlisted to fight the evil plot of a rival spy outfit. Why it works: The TV show never had much sexual fizz, but Carell and Hathaway bring the sizzle. Box office: '$231 million 'The Bounty Hunter' 2010 Actors: Jennifer Aniston and Gerard Butler Premise: He's a bounty hunter, she's his ex-wife, they're on the lam from a gang of Atlantic City bookies. Why it doesn't work: He's too slobby, she's too brittle, the action is lame, and you don't believe they're meant for each other for a New York minute. Box office: $130 million 'Date Night' 2010 Actors: Tina Fey and Steve Carell Premise: They're a married couple who, through a case of mistaken identity, run afoul of a Manhattan crime ring. Why it doesn't work: Fey and Carell are masters of improvisation, but they keep getting drowned out by bullets and a boneheaded car chase. Box office: $142 million 