What about NASA losing 700 boxes with space flight tapes (including the moon landing)?
http://en.wikipedia.org/wiki/Apollo_..._missing_tapes

1961, Yuri Gagarin of Russia (USSR) was the first man in space.
1962, Kennedy promised to put a man on the Moon before the end of 1960s (they had to show to the Russians that US is the best).
1969, Apollo 11, first man on the Moon
then Apollo 12, Apollo 13 (failed), Apollo 14, Apollo 15, 16, 17

6 successful manned Moon landings in 60s-70s

...... then nothing.

2004 - NASA said that they will go on the Moon again but the mission will be ready only in 2020.

With the technology of the 60s we were able to go 7 times, and now we have to wait 15 years to build what we need to go to the Moon?

Anyway, again, I don't say that they never went on the Moon, I'm just saying that I'm not convinced, but that is just me.