 However, he resumed his cards; Vanity card #493 on March 5, 2015, featured a tribute to the late Leonard Nimoy, who had guest starred on the show as the voice of Sheldon's conscience three years before.In 2017 with the premiere of "Disjointed", for the first time since "Dharma & Greg" premiered in 1997, a new show of Lorre's did not use his traditional Vanity Card.Instead a standard production logo was used.