Review: an instantly forgettable snow-and-stuntwork extravaganza that likely will be upstaged by an avalanche of more appealing holiday-season product . 
Sentiment: negative

Review: best sex comedy 
Sentiment: positive

Review: the film offers an intriguing what-if premise . 
Sentiment: positive

Review: neil burger here succeeded in ... making the mystery of four decades back the springboard for a more immediate mystery in the present 
Sentiment: positive


Review: but not without cheesy fun factor .