21

21 (2008) is a Columbia Pictures crime drama you can watch online on iFILM, directed by Robert Luketic and starring Jim Sturgess, Kevin Spacey, Kate Bosworth, and Laurence Fishburne. The script draws from Ben Mezrich's book Bringing Down the House, which documented how an MIT student team used card counting to repeatedly clean out Vegas casinos through the 1990s.

Ben Campbell (Sturgess) is an MIT math prodigy short $300,000 for Harvard Medical School. His unconventional professor Micky Rosa (Spacey) recruits him into a tight circle of five students trained to count cards at blackjack — coded signals, rotating roles, weekends in Las Vegas. The winnings pile up fast. So does the heat from casino security chief Cole Williams (Fishburne), who has built a career on catching exactly this kind of operation.

Made for $35 million, the film earned close to $160 million worldwide. At its core, it's a study in what happens when a flawless system meets the messier logic of ambition and greed. Stream 21 (2008) online on iFILM.