In Linguistics, the way your neighbours talk can be as surprising and theoretically important as any source of data. This talk exemplified the techniques which literally let us look into the mouths of speakers. Ultrasound, for example, reveals the way in which some Scottish speakers produce a covert articulation of a word-final "r" consonant. This and other phenomena provide a fascinating insight into the complex dance of articulation. Its fine control structures and social variability reveal the complexity of "normal" pronunciation.