Most recently, he performed "Männerhort" (Men nursery) at the Theater am Kurfürstendamm in Berlin together with Bastian Pastewka, Michael Kessler and Jürgen Tonkel.

– Die schlimmste Woche meines Lebens, an adaptation of the British series The Worst Week of My Life, was broadcast.

Herbst's movie career began in 1998 in the film Der wirklich letzte Junggeselle ("The last bachelor").

His star roles were together with Michael "Bully" Herbig, Rick Kavanian and Christian Tramitz in Traumschiff Surprise – Periode 1 in 2004, as well as his appearance as the butler Alfons Hatler in the 2004 movie Der Wixxer together with Oliver Kalkofe, Thomas Fritsch, Oliver Welke and other leading German comedians.

In 2006, Herbst teamed up again with Herbig in the movie Hui Buh: The Goofy Ghost [de], starring as King Julius, the 111th.