Best way to make movies visible to all?

I need to make short little movies for psychology demos quite often. Naturally I just use Quicktime, but often I get readers complaining they can't see the movies. Here's an example:

Cognitive Daily Post

It seems to me that anyone who has the latest quicktime should be able to see these, but perhaps I'm excluding more people than I think. Is there a trick to saving quicktime movies that will enable more viewers to see them? Anything else I can do?

Any and all suggestions are welcome!

seniorstinky said:

I've found the easiest way for me to make movies accessible to everyone is to convert them to .flv (flash video).

Click to expand...

Well, I do have flash MX, but I never use it -- is that an easy thing to do?