RS Davis on Instagram: "This opening number was amazing, a step-by-step recreation of Donald O’Connor’s “Make ‘Em Laugh” number from “Singin’ In The Rain.” JGL had so much fun doing the dance number in “500 Days of Summer,” he invited the man who choreographed it - Michael Rooney - to help him with this. JGL said he “worked tirelessly getting me ready to do this thing,” and concluded: “he’s pretty f—in’ great.” Unfortunately, while the show let him do it, they never got the rights to the song, s