FLAG
Bad: When the astronauts are assembling the American flag, the flag waves. Kaysing says this must have been from an errant breeze on the set. A flag wouldn't wave in a vacuum.
Good: Of course a flag can wave in a vacuum. In the shot of the astronaut and the flag, the astronaut is rotating the pole on which the flag is mounted, trying to get it to stay up. The flag is mounted on one side on the pole, and along the top by another pole that sticks out to the side. In a vacuum or not, when you whip around the vertical pole, the flag will ``wave'', since it is attached at the top. The top will move first, then the cloth will follow along in a wave that moves down. This isn't air that is moving the flag, it's the cloth itself.
New stuff added March 1, 2001: Many HBs show a picture of an astronaut standing to one side of the flag, which still has a ripple in it (for example, see this famous image). The astronaut is not touching the flag, so how can it wave?
The answer is, it isn't waving. It looks like that because of the way the flag was deployed. The flag hangs from a horizontal rod which telescopes out from the vertical one. In Apollo 11, they couldn't get the rod to extend completely, so the flag didn't get stretched fully. It has a ripple in it, like a curtain that is not fully closed. In later flights, the astronauts didn't fully deploy it on purpose because they liked the way it looked. In other words, the flag looks like it is waving because the astronauts wanted it to look that way. Ironically, they did their job too well. It appears to have fooled a lot of people into thinking it waved.
This explanation comes from NASA's wonderful spaceflight web page. For those of you who are conspiracy minded, of course, this doesn't help because it comes from a NASA site. But it does explain why the flag looks as it does, and you will be hard pressed to find a video of the flag waving. And if it was a mistake caused by a breeze on the set where they faked this whole thing, don't you think the director would have tried for a second take? With all the money going to the hoax, they could afford the film!
Note added March 28, 2001: One more thing. Several readers have pointed out that if the flag is blowing in a breeze, why don't we see dust blowing around too? Somehow, the HBs' argument gets weaker the more you think about it.
STARS
Bad: The first bit of actual evidence brought up is the lack of stars in the pictures taken by the Apollo astronauts from the surface of the Moon. Without air, the sky is black, so where are the stars?
Good: The stars are there! They're just too faint to be seen.
This is usually the first thing HBs talk about when discussing the Hoax. That amazes me, as it's the silliest assertion they make. However, it appeals to our common sense: when the sky is black here on Earth, we see stars. Therefore we should see them from the Moon as well.
I'll say this here now, and return to it many times: the Moon is not the Earth. Conditions there are weird, and our common sense is likely to fail us.
The Moon's surface is airless. On Earth, our thick atmosphere scatters sunlight, spreading it out over the whole sky. That's why the sky is bright during the day. Without sunlight, the air is dark at night, allowing us to see stars.
On the Moon, the lack of air means that the sky is dark. Even when the Sun is high off the horizon during full day, the sky near it will be black. If you were standing on the Moon, you would indeed see stars, even during the day.
So why aren't they in the Apollo pictures? Pretend for a moment you are an astronaut on the surface of the Moon. You want to take a picture of your fellow space traveler. The Sun is low off the horizon, since all the lunar landings were done at local morning. How do you set your camera? The lunar landscape is brightly lit by the Sun, of course, and your friend is wearing a white spacesuit also brilliantly lit by the Sun. To take a picture of a bright object with a bright background, you need to set the exposure time to be fast, and close down the aperture setting too; that's like the pupil in your eye constricting to let less light in when you walk outside on a sunny day.
So the picture you take is set for bright objects. Stars are faint objects! In the fast exposure, they simply do not have time to register on the film. It has nothing to do with the sky being black or the lack of air, it's just a matter of exposure time. If you were to go outside here on Earth on the darkest night imaginable and take a picture with the exact same camera settings the astronauts used, you won't see any stars!
It's that simple. Remember, this the usually the first and strongest argument the HBs use, and it was that easy to show wrong. Their arguments get worse from here.
EVERYTHING ELSE
http://www.badastronomy.com/bad/tv/foxapollo.html#stars
and let me just point out something. alot of u think ur so smart cuz u have "evidence" that they didnt land on the moon. dont u think that if ur average minds could see these points, nasa could too? i mean if they were trying to pull of a hoax, theyd make sure everything looked close to real before showing it. they would see the same points ur making. ok i doubt any of you are smarter then some of the people there, so dont think that if u find these points, ur the first to notice them. i mean look at the movies they have now. they look extremely convincing and look like its actually happening..