Update: We have revised the article based on recent Google changes.
If you feel Google’s new interface is awful, you can get old plain layout back from https://www.google.com/webhp?complete=0.
Though the new layout is much cleaner and gives you option to re-arrange the products in the menu, the older layout is much classier and easy to use with single click access to other products.
With the older layout, you get back the black bar at top which lists most used services: Image search, Gmail, News and Maps. You also get a direct share box for Google+ which is absent in the new interface.
Google’s Old Layout: https://www.google.com/webhp?complete=0
We recommend you to bookmark this link or to make it another search engine in Chrome.
To show old Google layout on searching from omnibox: Right click on omnibox (address bar) and select edit search engines. Now add a new search engine with following options:
Name: Old Google
And URL: https://www.google.com/webhp?complete=0&hl=all#hl=all&q=%s
And you are done. Now on, when you search from omnibar, you will get those results in old designed Google.
And don;t worry, you will still get the new doodles on these pages. However, we are not sure how long this URL will get you old layout. Til then, use it for your convenience.
Related: Remove Google Fade-in Effect.