Using Steve's suggestion above as a jumping off point and then reading some tutorials I was able to come up with a working script:
Sub UniformHeight()
Dim SlideToCheck As Slide
Dim ShapeIndex As Integer
For Each SlideToCheck In ActivePresentation.Slides
For ShapeIndex = SlideToCheck.Shapes.Count To 1 Step -1
SlideToCheck.Shapes(ShapeIndex).Top = 36
Next
Next
End Sub