rob cohen launched the franchise and pitched it to walker. >> it was over dinner i said to him, you know, i'm developing a movie. we just got going on the script but i'm developing a movie about this, you know, underground street racing world. >> paul walker obsessed with amateur racing from an early age didn't skip a beat. >> he said, i get the girl. i get the gun. i get the car and you're directing. i don't have to wait for the script. i'm in. >> explosions. stunts and speed. it was a dream come true for walker. >> i really don't see how i could have more fun or making a movie could be more of a thrill than it was making this one. >> one film would turn into seven. with box office receipts topping $2 billion. theaters filled with moviegoers drawn into the action. and to the lead actor for more than a decade. >> he's just such a lovable man. there's something in that spirit of life and lightness that just kept coming through and people were just very attracted to that. >> "fast & furious" would become a cultural phenomenon, a lucrative franchise of video games and merchandise. >> feels

rob cohen launched the franchise and pitched it to walker. >> it was over dinner i said to him, you know movie. we just got going on the script but i'm developing a movie about this, you know, underground street racing world. >> paul walker obsessed with amateur racing from an early age didn't skip a beat. >> he said, i get the girl. i get the gun. i get the car and you're directing. i don't have to wait for the script. i'm in. >> explosions. stunts and speed. it was a dream come true for walker. >> i really don't see how i could have more fun or making a movie could be more of a thrill than it was making this one. >> one film would turn into seven. with box office receipts topping $2 billion. theaters filled with moviegoers drawn into the action. and to the lead actor for more than a decade. >> he's just such a lovable man. there's something in that spirit of life and lightness that just kept coming through and people were just very attracted to that. >> "fast & furious" would become a cultural phenomenon, a lucrative franchise of video games and merchandise. >> feels good to be appreci

and rob cohen directed it. wonderful film. we spent all this time shooting this.he movie. and i remember, one of the most precious memories i have we went to the initial screening of the rough cut of the movie. as i'm walking up to the theater he runs up to me. hill we're going to do this cool movie. they had just signed to do "red line" which became "fast and the furious." it was the beginning same director beginning of the stardom. such a generous spirit, wonderful person. my heart just goes out to him and his family. just an amazing guy. it's a big loss. >> 40 years old. it's unthinkable. during what's your story we usually go back to the panel and just find out some stories that people have been interested in by the way, sal kahn earlier used polynomials. i'm not sure what it is. we've been wondering what they are every since. here's a quick video of sal kahn explaining polynomial. >> it might sound like a really fancy word. really all it is is an expression that has a bunch of variable or constant terms in them that are raised to none zero encomponents that.