1) The document discusses various examples of parodies found in media such as Saturday Night Live sketches, children's books, art, and films.
2) Parodies are difficult to write as they must mimic another work's style while also being entertaining and making criticism. Famous parodists mentioned include Lewis Carroll, Mark Twain, and Monty Python.
3) Parodies of children's literature are commonly used in advertising and media as these stories are widely recognizable references. Examples parody works like Where the Wild Things Are, The Wizard of Oz, and Goodnight Moon.