21
- taona: 2008
- Firenena: United States of America, United Kingdom
- Genre: Drama, Crime
- Studio: Columbia Pictures, Relativity Media, Michael De Luca Productions, Trigger Street Productions
- Keyword: friendship, card game, casino, gambling, professor, harvard university, cohabitant, college, girlfriend, studies, dormitory, blackjack, las vegas
- tale: Robert Luketic
- Cast: Jim Sturgess, Kevin Spacey, Kate Bosworth, Aaron Yoo, Liza Lapira, Jacob Pitts