 The many guest appearances included Clayton Mark as wax-droid Elvis Presley, Kenneth Hadley as wax-droid Adolf Hitler, Martin Friend as wax-droid Albert Einstein, Stephen Tiller as wax-droid Pythagoras, Jack Klaff as wax-droid Abraham Lincoln, Tony Hawks as wax-droid Caligula, Michael Burrell as wax-droid Pope Gregory, Forbes Masson as wax-droid Stan Laurel, Roger Blake as wax-droid Noël Coward and Pauline Bailey as wax-droid Marilyn Monroe.For the second time in as many episodes, the arrangement of the end theme tune was changed.The tune itself was retained as normal; however, the lyrics were sung by Elvis Presley impersonator Clayton Mark instead of by Jenna Russell.