Breaking Bad extremely playful on set, with Aaron Paul describing him as "a kid trapped in a man's body". Gilligan originally intended for Aaron Paul's character, Jesse Pinkman, to be killed at the end of "Breaking Bad"s first season in a botched drug deal as a plot device to plague Walter White with guilt. However, Gilligan said by the second episode of the season, he was so impressed with Paul's performance that "it became pretty clear early on that would be a huge, colossal mistake, to kill off Jesse". Donna Nelson, a professor of organic chemistry at the University of Oklahoma, checked
Bullet Points (Breaking Bad) your head and it's fun." In the background of the karaoke performance, stock footage from the science-fiction television series "Quark" was visible in the background. Gilligan was a fan of the show during childhood and recognized it while reviewing available stock footage. The full karaoke video was made available on the official "Breaking Bad" website after the episode was first broadcast. The scene when Walter looks through Gale's notebook at Hank's behest features a montage of quick cuts between the notebook pages and Walter's face as he read. The montage was conceived by Gilligan, who wanted to express Walter's stress