Plot: Dave's first new show following the death of Johnny Carson is an hour-long tribute, featuring clips of Johnny's appearances on both ""Late Show"" and ""Late Night,"" and the ""Tonight Show"" clip of Johnny stealing Dave's pickup truck; longtime ""Tonight"" producer Peter Lassally; former ""Tonight"" bandleader Doc Severinsen and former NBC Orchestra members Tommy Newsom and Ed Shaughnessy perform one of Johnny's favorite songs, ""Here's That Rainy Day. ""