NASA has been repeatedly ridiculed for it's lack of response to the MOON LANDING naysayers. Infact, they've never really shot back and said, "Yes we did go to the moon, and this here is all the proof you need...roll the tape." Why not you may ask? Oh yeah, because they LOST the tape. They lost ALL of it.

http://www.wired.com/wired/archive/15.01/nasa.html