These included Bill Murray, Harold Ramis, Betty Thomas, Shelley Long, George Wendt, David Mamet, and Robert Townsend.
In terms of accepting students who were not necessarily Second City actors learning the art of improvisation, but also including students from all walks of life and professional disciplines Players Workshop can arguably be called the first real school of Improvisation, with a class structure, syllabus, and graduation requirement, pre-dating loosely organized workshops created in the mid-1970s by Dudley Riggs (Minneapolis, MN USA) and Keith Johnstone (Calgary, AB, Canada).
One of Forsberg's students, Charna Halpern, joined forces with David Shepard and helped to bring the Improv Olympiad to become one of Chicago's foremost arena's for new improvisers.
Her nephew, Martin de Maat had become the creative director of the Second City Training Center which was growing in leaps and bounds, offering a tremendous competition to Players Workshop.
However, in 2007, she was approached by her old friend and student Bill Murray to help teach the New York Giants improv, in the hopes of giving them an edge.