Now don't get me wrong. But think of your visitors. Can't they view this image inside of a gallery or portfolio. Just because we make something cool does not mean that we need to paste it on our index page. Do yourself and your visitors a favor and at least consider putting it some place else.
Splash pages do have there place in our wonderful internet world today.
There are many times where the user must make a choice. These are all valid reasons to have a splash page. Think of your target audience. Are they going to mind waiting for a picture to load on your front page with no content. If the answer is yes then fine, do as you wish.