A media pitch is written to get specific media coverage from a reporter.  It is written and geared in a story format.  It is often tied to a news story.  I recommend a two paragraph media pitch.  The first paragraph should list the issue or news story, as well as, critical questions that should be asked or addressed by the reporter.  The second paragraph should include your expertise in being able to address those questions, as well as, how you would answer the questions.  You want the pitch written concisely, with a good soundbite in your answer.  With media cutbacks, reporters and producers love pitches that are written as a news story that they can incorporate into their story and the interview with you.  Media pitches generate the hard media coverage and interviews that brands, authors, and celebrities crave in a public relations campaign.