In the current issue of THE NEW YORKER, Edmund Morris, Reagan's "official" biographer, makes this truly astonishing claim:
As a young actor in the Warner Bros. commissary, [Reagan] used to sit at the “fast” Jewish table in order to study, and eventually compete with, the shtick of such motormouths as George Burns, Jack Benny, and the Epstein brothers. Although not naturally a wit, he was capable of dry riposte, as in the crack about Archbishop Desmond Tutu that George H. W. Bush repeated the other day at the Washington National Cathedral, convulsing the congregation.
Does anyone recall any of Jack's "motormouth" wit? Think Jack first met Reagan while Jack was working at Warner Bros. making GEORGE WASHINGTON SLEPT HERE? Or earlier, when Jack made his cameo in CASABLANCA?
Morris screwed up his bio of Reagan pretty good, eventually concluding that he didn't understand the man at all. And it's not as if Jack and George never met for lunch at Warner Bros., but possibly, since Morris probably relied on one of Reagan's stories, he has the commissary confused with the Hillcrest Country Club roundtable.
There were much funnier people in lunch-table situations than Jack Benny. The Hillcrest anecdotes that mention him only mention his reaction to others' witticisms. The "motormouth" at Hillcrest was usually George Jessel. But Morris had to mention an iconic funnyman, and so came up with Benny.
So there's Jack in THE NEW YORKER, teaching Ronald Reagan how to be funny. He DOES show up in the strangest places sometimes.