Please take doone's advice and try reading up on how objects move in a vacuum. Then take into account how the flag was made and forces acting on the flag when it was was "waving".
This nonsense about men not landing on the moon and the flag waving in a breeze has been busted so for such a long time you would think people would just let it go....facepalm.
We did, my uncle worked on the LEMS. He helped wire them and installed the optical systems. 10's of thousands of people worked on the Apollo missions. We went, we landed and we walked and road on it. The handful of idiots that think different need to get a freaking clue.
Why haven't we been back? Money and public will. Back in the 60's we had the public on our side and plenty of money. Today sadly it's the opposite. And Obama has stopped U.S. manned spaceflight after the shuttle retires. He killed the Constellation program. A very sad time for the U.S. space program.
The U.S. space program is LESS THAN 1% of the federal budget.
Mythbusters did a great episode on moon landing conspiracies. If I recall correctly, they specifically addressed the supposed questions regarding foot print definition in dry soil, lack of parallel shadows, illuminated suit in shadow, and the ubiquitous omg-teh-flag-is-waving issue. It's definitely worth a watch.
Edit: Found a good link outlining the basic debunkings of the myths.
Oh, and there's also that nifty reflector on the moon that you can bounce a laser off. Its existence proves that humanity visited the moon and placed it there!
I don't have a nifty hyperlinked source for this. All I know is that they did it on The Big Bang Theory! I generally rely upon sitcoms for my best evidence. TEAM SHELDON!