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Then there was the tone and pacing of the movie — frantic, jagged, adrenalized.

In 2018, Cruz barely survived an out-of-nowhere challenge by Beto O’Rourke, a phenom who became a political folk hero with his edgy, adrenalized escapades.

But in Jason Reitman’s overstuffed, adrenalized “Saturday Night,” a dramatization of the windup to that fateful first broadcast, you don’t feel the buzzy air of revolution so much as hear the voice of present-day legacy curation getting in the way.

In the adrenalized aftermath of a Mike Tyson prizefight in 1996, a black BMW carrying the rapper Tupac Shakur pulled up to a red light just off the Las Vegas Strip, thrilling the women in the car next to him.

“It’s so immediate, and you have so many more tools at your disposal as a director to be standing inches away from your scene partner and to be able to not only give direction from within the belly of the beast but to mold the performance. I never felt overwhelmed by it. I felt quite adrenalized by it, always inspired by what was happening in that tornado.”