struck Rock, 57, during the 94th Academy Awards on Sunday night at the Dolby Theater while the latter was presenting the Oscar for Best Documentary Feature.Crystal, who has hosted the Oscars several times over the years, gave his insight into the slap heard ’round the world.The “When Harry Met Sally” star, 74, joked about the slap during his curtain speech at a dress rehearsal for his upcoming Broadway show “Mr. Saturday Night” on Tuesday.“We got through a show and no one got slapped. Unbelievable,” he said.The play starts previews on March 30 and will officially open on April 27 at the Nederlander Theatre.