Comedy fans at Chris Rock’s show in New Orleans on Saturday got more than just a great show -- they got a surprise appearance from Dave Chappelle.It was the first night of Rock’s Total Blackout tour -- his first stand-up run in nine years -- when Chappelle took the stage unannounced. He told the crowd, “Tonight, you are all part of a social experiment… Stranger things have happened in New Orleans.” The two comedy heavyweights shared the stage for 90 minutes. After the show, Rock posted a picture of them on stage with the caption, "Watch the Throne part 2. Total Blackout tour 2017."