No it wasn't faked they did actually land on the moon.
However what did happen was that NASA were concerned that the sheer momentousness of the occasion might overwhelm Armstrong or Aldren so much that they might swear. As a result NASA put in place a 10 minute delay, which gave the team the opportunity to edit comments and re-insert them into the footage.
NASA have especially released the actual footage in time for the 40th anniversary given that our tolerance for swearing has changed substantially since the 60s*.
http://www.blogjam.com/neil_armstrong/* note to anyone clicking the link that it does involve a substantial amount of swearing and maybe offensive to children or those of a hermit-link Presbyterian lifestyle.