The original cast of "Ghostbusters" reunited on late-night to promote the upcoming third installment in the franchise, "Ghostbusters: Afterlife." Bill Murray, Dan Aykroyd and Ernie Hudson captured lightning in a bottle in 1984 when they starred alongside the late Harold Ramis in the fan-beloved film about a group of men who open a sort-of exterminator business to help people deal with ghosts haunting them.The film spawned an equally beloved sequel in 1989 and a non-canonical reboot in 2016.