For the theatrical run, a small cough could be heard during the opening Sony logo. It was taken out of the DVD and Bluray releases to prevent viewers from thinking someone was in their home.
Kurt Russell mentioned that his son Wyatt Russell turned down a role for The Hunger Games sequels to star in this movie.
At 53 mins.) The old guy with the broken ankle trying to pass Jonah Hill wasn't a planned bit. It cuts right before Hill turns to the camera to ask what the hell that was about as he was wondering if the filmmakers were messing around with him. "I'm just gonna stay in the scene and see what happens," he recalls thinking.
They were all floored by Jillian Bell's banter with Jonah Hill in the morning scene. The filmmakers note that it was the first time they ever saw Hill on his heels. "It's like she thinks about what I'm gonna say before I say it and says it better and funnier than I was."
The initial fight between Jonah Hill and Jillian Bell was improvised and captured in a single (two camera) take. When she moves in for a kiss you can see Hill almost laugh and look over to Phil Lord & Chris Miller just out of frame at (1hr 31 mins.) He looks to them a few more times during the scene, and they're all loving it.
Dustin Nguyen: of the original 21 Jump Street (1987), as the Vietnamese Jesus in a deleted scene: Jenko's dream sequence while he's high on WHYPHY.