What you see here is the default search results page of Google with the Universal Search feature turned on. The search results are a mix of regular web pages, news stories, image thumbnails, video clips and even blog posts (also see the extreme edition).
The Universal Search feature is activated automatically depending upon your search query and Google doesn’t provide any option to disable Universal search.
Disable Universal Search in Google
There’s however a workaround that will not only help you turn off the Universal Search feature but your search queries will also not get recorded into your Web history even if you are logged into your Google Account.
Update: This is no longer available. You can however use Google Custom Search to bypass Universal Search.
The trick is that instead of using google.com, you should perform the search on google.com/custom – this is the good old vanilla edition of Google search that doesn’t have a menu bar at the top, the Google Ads are displayed only in the right sidebar and you get only regular web pages in search results.