Instead of waiting until the end of the year for Google's annual Zeitgeist, you can now find out what's trending in any given month with a new Top Charts feature from Google Trends. Updated monthly and going back to 2004, Top Charts is built on the Knowledge Graph, so it's smart enough to house related keywords under one term for more accurate rankings. For example, searches for "giants baseball" and "sf giants" would go toward pushing "San Francisco Giants" up the ranks in a sports-related chart. Right now there are more than 40 top ten lists with more than 140 time periods available for your perusal. In addition to the charts, the Trends team has also rolled out a new visualization tool for "hot searches" that displays trending topics in a large colorful layout -- as seen below, you can customize it to display up to 25 searches at a time that endlessly shift and refresh, thus consuming our attention for the entire day.
Source: Official Google Blog