If you are in the US and you use Internet Explorer, Google homepage will tell you to switch to Firefox. And while you switch to Firefox, you'll also get Google Toolbar.
If you aren't in the US, and you want to see the first cluttered Google homepage, use this free proxy while browsing with Internet Explorer.
If you have Internet Explorer 7, Google homepage is even uglier.
I thought Google.com should be simple, as Marissa Mayer once said: "It's simple, it's elegant, you can slip it in your pocket, but it's got the great doodad when you need it."
Reduce memory usage in Firefox
How much money made Mozilla from Google in 2005?