Based on Ben Mezrich's book, "Bringing Down the House: The Inside Story of Six M.I.T. Students Who Took Vegas for Millions," the movie will screen at Austin's Paramount Theater and will help kick off nine days of film screenings, parties and panel sessions, as well as the SXSW trade show.
"We're thrilled to have '21' screen as the opening night film of SXSW 2008," festival producer Matt Dentler said in a statement. "With a great story, as well as fantastic talent in front of and behind the camera, we're willing to bet that audiences will be just as excited."
Other films set to unspool during the event are "At the Death House Door," "Dreams with Sharp Teeth," "Flawless," "Run Fatboy Run" and "Wild Blue Yonder."
2014: The Year in Music [PHOTOS]