How to get fragments of an exploded object to react more accurately to collisions with a plane? Since a picture (or animated GIF in this case) is worth a thousand words, I will begin by providing an example of the problem I am trying to solve:



As you can see, the fragments of the monkey never change orientation as they fall and "bounce" off of the plane that they are colliding with.

I created this animation by adding a monkey to the scene and using the Object->Quick Effects->Quick Explode tool. The fragments never change their orientation, which is grossly unrealistic.

How do I fix this?
You can make the explosion shards/particles rotate dynamically by enabling Rotation and Dynamic in the particle settings:

Result:

However, if you want realism I recommend you try the Cell fracture addon with rigid body physics. See this question for more info.