Here's a list of services that show search results: YouTube, Play, Maps, Translate, Books, Shopping and Finance. You can middle-click or Ctrl-click the icons to open pages in a new tab.
Unfortunately, this feature is buggy: if you try another query, the links from the drop-down menu send you to the search results for the first query. That's because the feature doesn't work in the AJAX interface.
Useful tip: you can quickly open Google's list of "even more" services by middle-clicking the grid icon. You can also right-click it and select "open link in new tab".
Another tip: instead of clicking "more", you can scroll down.
Fun fact: Google's code includes icons for some other Google services. One of them is Google Reader. Other services: Google Groups, Google Video, Google Image Search, Google Contacts.
Speaking of Google service icons, you can find more icons here.