The Hyperbole reference article from the English Wikipedia on 24-Apr-2004
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Hyperbole

A hyperbole is a figure of speech in which statements are exaggerated or extravagant. It implies strong feelings or is used to create a strong impression and is not meant to be taken literally.

Examples:

In show business, hyperbole (known as hype or media hype) is the practice of spending money on public relations in an attempt to bolster public interest in (for example) a movie, television show, or performing artist. Often the entertainment value of the thing being hyped is exaggerated.

Largely synonymous with exaggeration.

See also:

External link: http://www.uky.edu/ArtsSciences/Classics/rhetoric.html