Possibly the biggest feature that will get people using the service initially, the Guide gives you what's showing on your local cable or satellite service so you can decide what to watch. Once you've decided, there are several ways to interact with your favorite shows.
As you watch a show, the right column is where you'll find Zeetags. These tags appear as actors, products, and locations appear in the show. When you touch a Zeetag, you'll get more information about each subject.