Here is the definition I am using for Creationism:
The universe was created by an intelligent being.
How is this disproved (i.e FALSE)?
INTELLIGENT? You call the guy who made this intelligent? HA!
The "creator" utterly destroyed species after species in five great extinctions, not to mention many lesser extinctions that mark the end of nearly every period in the geologic record. Many animals lay tens of thousands of eggs so that maybe a couple of them will survive and reach an age where they can lay tens of thousands of eggs. Our planet is not well protected from the harsh environment. We were born to die, regardless of what religion teaches.
We've got flightless birds and did you ever see that tail that peacocks have to drag around with them? They found out that some dinosaurs had feathers? What was that all about? No wonder the creator abandoned that model.
Man, the greatest of all "creation" lives shorter than some other creations, swims and runs slower than many, has worse vision than many, cannot fly like others. If we are pinacle of creation, we should be stronger and see better and move faster.
I could go on and on, but I think I made the point.
Or this:
http://www.youtube.com/watch?v=oEl9kVl6KPc