Mari Nelson: Mari Nelson. Actress: dot.CON. After graduating from The Juilliard School, Mari began her professional career in The New York Shakespeare Festival production of Twelfth Night in Central Park with Michelle Pfeiffer and Jeff Goldblum. In her Broadway debut, she originated the role of Elisabeth in John Guare's Six Degrees of Separation with Stockard Channing. Subsequent Broadway appearances include Sarah Brown in Guys and Dolls with Nathan Lane and Peter Gallagher...