I thought this one I got in email a long time ago was cute:

God is sitting in Heaven when a scientist says
to Him, "Lord, we don't need you anymore. Science
has finally figured out a way to create life out of
nothing. In other words, we can now do what you did
in the beginning!"

"Oh, is that so? Tell me..." replies God.

"Well," says the scientist, "We can take dirt and
form it into the likeness of You and breathe life into it, thus
creating man."  "Well, that's interesting.  Show Me. "

So the scientist bends down to the earth and starts
to mold the soil.... "Oh no, no, no..." interrupts GOD



"Get your own dirt."