Although, X have frequently been associated with films,television and books, these movies have some of the most notable depictions of X . What is X ?
X is said to have first appeared in this movie-
X-MacGuffin. MacGuffin is "a plot element that catches the viewers' attention or drives the plot of a work of fiction".Alfred Hitchcock popularized both the term "MacGuffin" and the technique, with his 1935 film The 39 Steps, an early example of the concept.Interviewed in 1966 by François Truffaut, Alfred Hitchcock illustrated the term "MacGuffin" with this story:
It might be a Scottish name, taken from a story about two men in a train. One man says "What's that package up there in the baggage rack?", and the other answers "Oh, that's a McGuffin". The first one asks "What's a McGuffin?". "Well", the other man says, "It's an apparatus for trapping lions in the Scottish Highlands". The first man says "But there are no lions in the Scottish Highlands", and the other one answers "Well, then that's no McGuffin!". So you see, a McGuffin is nothing at all.