That exists now on TaxCut software - when it says "checking your return for possible errors or red flags" or similar. It has some blinky lights animation or arr

That exists now on TaxCut software - when it says "checking your return for possible errors or red flags" or similar. It has some blinky lights animation or arrows or such that runs for about 10 seconds. It was probably done before Windows could bitblit the image to the screen.