This radio broadcast is the best summary of the Asia Bibi case I have found. Click the link to listen to this segment on Windows Media Player.
You hear from Ms. Bibi who describes the false charges of blasphemy, the Governor who wants to pardon her, the legislator who has tabled a bill to amend the blasphemy laws, and the Imam who wants to kill her.
Please listen and go sign the petition directed at Pakistani government leaders.