4400 The Great Leap Forward (2004–2007) Online
- Original Title :
- The Great Leap Forward
- Genre :
- TV Episode / Sci-Fi / Drama / Mystery / Thriller
- Year :
- 2004–2007
- Directror :
- Scott Peters
- Cast :
- Joel Gretsch,Jacqueline McKenzie,Patrick John Flueger
- Writer :
- Scott Peters,René Echevarria
- Type :
- TV Episode
- Time :
- 42min
- Rating :
- 8.5/10
Danny Farrell's newfound ability to spread promicin leads to several hundred deaths, including his mother. With Seattle in chaos, NTAC is forced to accept Promise City's offer of help.
| Episode cast overview, first billed only: | |||
 | Joel Gretsch | - | Tom Baldwin |
 | Jacqueline McKenzie | - | Diana Skouris |
 | Patrick John Flueger | - | Shawn Farrell (as Patrick Flueger) |
 | Chad Faust | - | Kyle Baldwin |
 | Conchita Campbell | - | Maia Skouris |
 | Megalyn Echikunwoke | - | Isabelle Tyler |
 | Jenni Baird | - | Meghan Doyle |
 | Billy Campbell | - | Jordan Collier |
 | Jeffrey Combs | - | Kevin Burkhoff |
 | Penny Johnson Jerald | - | Rebecca Parrish |
 | Kaj-Erik Eriksen | - | Danny Farrell |
 | Richard Kahan | - | Marco Pacella |
 | Kavan Smith | - | Jed Garrity |
 | Chilton Crane | - | Susan Farrell |
 | Pascale Hutton | - | Abigail Hunnicutt |
During Jordan's inspirational speech on the steps toward the end of the episode, writer and executive producer Ira Steven Behr is one of the extras in the crowd. He can be seen clearly toward the front of the crowd in at least one shot, and is easily recognizable because of his distinctive mustache and goatee, which are dyed blue.
Last show of the series.