Answer: Todd kept it.
The scenes in this episode of Jesse under the moving train were actually two scenes blended digitally: one of Jesse laying on the tracks, the other of the train. Aaron Paul didn't actually lay under a moving train.
From Quiz: The Details...for Hardcore "Breaking Bad" Fans
Answer: Air traffic controller
After the death of his daughter, Donald Margolis returns to work too early and has a panic attack that leads to two airplanes colliding in mid-air directly over Walter White's house. It was a symbolic occurrence that demonstrated how many lives Walter had already affected while participating in his criminal activities, since Jane's death could have been prevented by Walter.
From Quiz: All "Breaking Bad" Things Must Come to an End
Answer: Walter discovered Krazy-8 was plotting to kill him
Walter kept Krazy-8 chained to a post with a bike lock around his neck for several days. When Walter broke a plate serving a meal to Krazy-8, Krazy-8 hid one of the plate shards. Walter noticed the missing shard and strangled Krazy-8.
From Quiz: "Breaking Bad" Season 1
Answer: Spoon
The realtor follows Marie to her car and grabs her purse. Marie is caught red-handed as her purse rips open and a picture frame of the couple inside smashes on the ground. Hank uses his connections in the department to get her out of it.
From Quiz: "Breaking Bad" - Season 4
Answer: 307
The numbers 3 and 7 show up many times throughout the series. For example, when Hank receives the phone call that he is about to be attacked, the time on his clock reads 3:07. This is also the 7th episode of the 3rd season.
From Quiz: The Details...for Hardcore "Breaking Bad" Fans
Answer: A1A Car Wash
Both Walt and Skyler run the cash register for the car wash at various times throughout the series. A classic line that is repeated many times in the series is "Have an A1 day!"
From Quiz: All "Breaking Bad" Things Must Come to an End
Answer: A ventilator from Walter's chemistry classroom
While investigating a murder, Hank discovers a ventilator and sends it to the FBI lab for analysis. It comes back with a latent label identifying it as coming from Walter's high school chemistry classroom. Walter threw the mask off in the first episode after gassing Emilio and Krazy-8, and forgot it in the desert when he and Jesse fled. Hank asks Walter about the mask, but warns Walter that one of his students probably stole the mask to make meth.
From Quiz: "Breaking Bad" Season 1
Answer: Chile
Hank and his DEA cohorts can't find any records of Gus after he emigrated to Mexico. Gus blames it on the Chile's poor record-keeping, but they remain suspicious. Gus seems to have been important in the government because Don Eladio tells him, "I know who you are."
From Quiz: "Breaking Bad" - Season 4
Answer: DEA
Hank works for the Drug Enforcement Administration. Dean Norris is the actor who plays Hank on the show.
From Quiz: 'Breaking Bad' Basics
Answer: Bentley
W. O. Bentley, the founder of Bentley motors, is credited with coining the phrase "There's no replacement for displacement". Kenny says that exact phrase as he checks out Walt's car in the final episode.
From Quiz: The Details...for Hardcore "Breaking Bad" Fans