Here's a feature I've been expecting ever since Google started to test rich snippets for pages that include reviews: showing movie ratings in IMDb's snippets.
Now you can see the ratings without having to click on the search results, which is useful if you browse the web using a mobile phone or you want to check the ratings for a lot of movies.
"Google tries to present users with the most useful and informative search results. The more information a search result snippet can provide, the easier it is for users to decide whether that page is relevant to their search. With rich snippets, webmasters with sites containing structured content—for example, review sites or business listings—can label their content to make it clear that each labeled piece of text represents a certain type of data: for example, a restaurant name, an address, or a rating," explains Google.
To quickly see the IMDb ratings for a list of movies, you can start with an empty Google Square, add the column "IMDb rating" and start entering movie titles.