"Houston, we have an opportunity"

The hero of the story: Gene Kranz, flight director or "FLIGHT"

Important people providing data to Kranz and implementing his decisions (alphabetically)
Charlie Dumis, Electrical and Environmental Command Officer or "EECOM"
Bill Fenner. Guidance Officer or "GUIDO"
Alan Glines, Instrumentation and Communications Offier or "INCO"
Fred Haise, Lunar Module Pilot

Willard Hawkins, Flight Surgeon
Bob Hesslmeyerm, LEM Telemetry, Electrical, EVA, Mobility Unit Officer or "TELMU"
Tom Kelly, Lunar Module Engineering officer, Grumman Corporation
Jim Lovell, Command Pilot
Ken Mattingly, prime command module pilot, grounded due to measles exposure
Bobby Spencer, Retrofire officer "RETRO"
Bill Stoval, Flight Dynamics Officer or "FIDO"
Bill Strabie, Guidance, Navigation, and Control Officer or "GNC"
Larry Strimple, LEM Guidance Officer or "CONTROL"
Jack Swigert, Command Module Pilot

 Things to Watch For in the Movie
 

Great Lines:

"Houston, we have a problem"

"Lets work the problem, people. Let's not make things worse by guessing."

"What have we got on the spacecraft that's good?"

"I want you all to forget the flight plan. From this moment on we are improvising a new mission."

"I don't care about what anything was designed to do. I want to know what it can do."

"We never lost an American in space. We're sureashell not going to lose one on my watch. Failure is not an option."

"I don't want another estimate. I want the procedure. Now!"

"With due respect, sir, I think this will be our finest hour."