One thing that the conspiracy theorists never address is the fact that the moon landing happened during the peak of the cold war- so the USSR was VERY interested in the U.S.'s progress, and they monitored it all the way there and all the way back. If there had been any funny business at all they would have known about it. Not only would they have loved to have discredited and embarrassed the capitalist pigs, but up to this point there had been a "space race" and the Soviets sure didn't want to lose!

All the conspiracy guys come up with is "OMG the shadows are going at different angles!" and other such nonesense that is very easily explainable to those with half a brain.