To see for yourself, tune into this episode which features a Madonna lookalike, a mobster, and an escapee from a barbershop quartet.
The instructor claims facility in "7 or 8 European language and familiarity with several tens of other languages."
Unbelievably, about 15 of the hours of these classes are of the teacher talking to / interrupting the students. Check out minute 17 for some of the choice language the students are exhibiting.
Throughout all of the lessons, the students furiously copy down all of the instructor's grids and sample translations. If they ever lose those little notebooks, they'll be in trouble.