- Dr. Emmett Brown: Time circuits on.
- Marty McFly: What do you mean "Time Circuits on"? Doc, we're not going back now!
- Dr. Emmett Brown: Yep.
Chris Lloyd - Dr. Emmett Brown
Michael J. Fox - Marty McFly

“Good to see you. Fifteen years. Hasn't changed a bit.”

James Cagney - Rocky Sullivan

“When times are gone, they are not old, they're dead. There aren't any times but new times.”
Joseph Cotten - Eugene Morgan

“- Jared Grace: We can't stay here. Look at this place. It's the house that time forgot. And it's got that...
- Simon Grace: Old people smell.”
Freddie Highmore - Jared Grace
Freddie Highmore - Simon Grace

“What if you could go back in time and take all those hours of pain and darkness and replace them with something better?”
Jena Malone - Gretchen Ross