LouderVoice Reviews by Dennis Deery 2008-04-14T00:35:54Z tags:www.loudervoice.com 21 tags:loudervoice.com/reviews/265816212 2008-04-14T00:35:54Z 2008-04-14T00:35:54Z Dennis Deery rating: 4<br/> The movie 21 is based on the book Bringing Down the House by Ben Mezrich. It's the story of a group of MIT students who spend their weekends in casinos counting cards, taking the house for big money playing blackjack. The book was a gripping...