Animating multiple objects together I'm trying to animate multiple objects together in one animation, but can't seem to do that.

I have 5 cubes. I created 4 animations, but Blender automatically created another 4 animations for 4 cubes, called Cube001.Action, Cube002.Action, and so on.

Basically, when I move one cube, it modifies its position in another animation rather than the one I want, and disappears from the animation I need.
Turn the action editor window into "dopesheet" and you will see all your animations.
Every object has his own action, 5 objects animation will consist of 5 actions, editable together through the dopesheet.