Many actors in biographical movies will interview the real people they're portraying to get a feel for their mannerisms and values. However, Joseph Gordon-Leavitt is going the extra mile to make sure that he's correctly representing NSA whistleblower Edward Snowden in Oliver Stone's upcoming movie. The star has revealed to The Guardian that he held a secret, four-hour meeting with Snowden in Russia to understand the fugitive. How secret? Gordon-Leavitt was not only advised to avoid recording the conversation, but (for a while) to avoid even acknowledging that it took place -- not surprising when the US likely wants to watch Snowden's every move.