Not taken the test yet, but I feel I have to defend the Igors. I didn't take to the Igors at first either, but I really warmed to them. So much so, that I'm considering a petition for John Cusack to redub his upcoming (non-discworld related) Igor movie with a lisp.
Private medicine practitioners wouldn't stand a chance, if only the NHS had the same policy as the Igors with regards to 'not trying something on someone else you wouldn't try on yourself first'. Or perhaps in that case the NHS would have greater staffing issues than present.