Searchers are noticing a new knowledge graph answer from Google regarding restaurant menus. If you search for a restaurant and add menu to the query, you may see the menu directly in the search results.
An example is searching for [red lobster menu], as shown by Moz on Google+:
Google is somehow figuring out the structure of the menu, either by indexing the menu on their web site or getting it from a structured menu data source, and showing those details directly in the search results.
Matt McGee posted a different example on Search Engine Land.
Useful, indeed. Not sure how accurate it is but very useful.
Next up, pricing on the results, with online ordering via Google Wallet and delivery via Google Shopping. ;-)
Forum discussion at Google+.