How the ‘Saturday Night’ cast compares to real-life ‘SNL’ stars
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How the ‘Saturday Night’ cast compares to real-life ‘SNL’ stars

“Directing is 90% casting.” That maxim of unknown origin has been subscribed to by some of Hollywood’s greatest directors, including Robert Altman, Martin Scorsese, John Ford, Elia Kazan, and, seemingly, Jason Reitman.   The filmmaker behind “Saturday Night,” the movie about making the first episode of “SNL,” has said he could…