Can the dream world be a fully functional parallel reality? Joseph Gordon-Levitt and leading scientists take you to the cutting edge of dream research in this documentary produced for Christopher Nolan's "Inception."
| Actor | Role |
|---|---|
 Joseph Gordon-LevittSelf | Self |
| WWilliam C. DementSelf | Self |
 Christopher NolanSelf | Self |
 Leonardo DiCaprioSelf | Self |
| LLynarion HubbardSelf | Self |