a) The Theme from Jeeves and Wooster, most recently, because I included it on an ear training slide for a music student(one wants to lead them into useful hobbies, if surreptitiously, at times...)
b) Whale sounds, same slide (especially the one where the whale gives this big, heaving groan-like sound before diving, it sounds like, "Oh, get me out of here....")
c) The Polyphonic Choir referred to earlier on this thread, I've used it several times now as an example of vocal music for students who know Western stuff well enough, just to tickle their ears and get them to hear new musics...thanks, Hegemony!!)
M.