The URL on the video of Niki that Ando is watching - www.lasvegasniki.com - redirects to 9th Wonders.

Ratings: 13.31 million.

Symbols: On Claire's geometry book, as a pendant in a necklace of the man that Matt cannot read, and on Chandra Suresh's book; it is also a re-occurring pattern shown on the Data Drive that Chandra Suresh left to his son and on several of Isaac's art pieces.

Writer Jeph Loeb and director Greg Beeman both worked on the superhero series, Smallville.

Mohinder: (opening voiceover) When evolution selects its agents, it does so at a cost. It makes demands in exchange for singularity. And you may be asked to do something against your very nature. Suddenly, the change in your life that should have been wonderful, comes as a betrayal. It may seem cruel, but the goal is nothing short of self-preservation. Survival.

Hiro: I'm on the subway in Japan. Suddenly, I'm in New York! Five weeks in the future!
Ando: Been hitting the sake?
Hiro: I found the book's author, but he was dead! Then, there's a nuclear explosion. Ka-Boom! It all happens in five weeks. And you and I have to stop it.
Ando: Definitely the sake.

Peter: You were there, last night - I could fly. This morning - nothing! I nearly broke my neck trying!
Nathan: Well, that would've solved one of our problems.

Audrey: So, you just waltzed right in, found a kid hiding in a wall then pulled the name Sylar outta your ass when only a handful of us know that name?
Matt: It's -- it's like... it was like someone was talking to me... except it was in my head.
Audrey: The voices tell you anything else? They want you to do things? Rob a store? Kill the President?

Matt: How much longer do I have to be in here?
Ajudrey: Depends. How'd you like to work with the FBI?

Claire: (to Zach) What's wrong with wanting to be normal? You should try it.

Simone: (to Isaac) Fine. You think you can paint the future? Paint one without me in it.

Hiro: (as his watch alarm goes off) We have to go right now! A girl's life depends on us!

Ando: And if there's going to be a nuclear explosion... shouldn't we be flying away from the bomb?
Hiro: A hero doesn't run away from his destiny. My only concern is whether I need to hide my true identity. Perhaps a costume?
Ando: You even mention tights and a cape, I'm going home.

Simone: I'll miss you.
Peter: It's New York, I mean... everyone runs into each other sooner or later.
Simone: Maybe it'll be sooner.

Hiro: Yes. In a Nissan Versa.
Ando: Do you know how long that's going to take? Suppose she doesn't have that exact car?
Perky Car Rental Woman: You're in luck, we have one left.
Hiro: It's our destiny.

Peter: You son of a bitch!
Nathan: Let him go. Easy, Pete, that's our mother you're talking about.

Mohinder: (closing voiceover) This force, evolution, is not sentimental. Like the Earth itself, it knows only the hard facts of life's struggle with death. All you can do is hope and trust that when you have served its needs faithfully, there may still remain some glimmer of the life you once knew.

Claire: (after surveying herself) Holy sh --

When Suresh finds the key in his father's book, the length of scotch tape on the key varies between shots.

When Nathan Petrelli is walking to the limo after his speech, he tells his secret service agents "He turns around to the other one and says, Holy Cow, a talkin' dog" which is the end of a really long joke that can last an hour if you're good at it about two talking race horses called Herman and Berman.

Episode Title: One Giant Leap

The episode title comes from the phrase "That's one small step for man, one giant leap for mankind" spoken by Neil Armstrong during the first moon walk on July 21, 1969.

Agent Audrey: Tell me what I’m thinking, Karnack.

Karnack The Magnificent was a character performed by Johnny Carson in a segment on the Tonight Show. Johnny would dress as a fortune teller and hold an envelope up to his forehead and “read” the answer sealed in the envelope. He would then open the envelope and reveal the “question”. A sample would be: Karnack (holding envelope to his head) “Shogun”. Ed McMahon (repeating) “Shogun”. Karnack (opening envelope) “What's the first thing you do when you hold up a liquor store?”

Abilities Development
Claire Bennet: Claire has the ability to come back to life after suffering a fatal injury, in this case a tree branch was stuck through her head.
The Haitian: The Haitian is able to block Matt from using his mind-reading abilities.
Hiro Nakamura: Hiro's teleportation powers allow him to stop time completely. While he stops time, Hiro is able to walk around as everything else is frozen in time.
Peter Petrelli: Peter tries to fly without being around Nathan, but is unable to do so.
Sylar: Sylar has telekinetic abilities and is able to fly by using his telekinesis.