As already mentioned a couple of times, hybrid recommenders are extremely powerful, robust systems that combine various simpler models to give us predictions. There is no single way in which a hybrid model could do this; some hybrids predict using content and collaborative filtering techniques separately to produce results. Some others introduce content-based techniques into collaborative filters and vice versa.
Netflix is a very good example of a hybrid recommender. Netflix employs content-based techniques when it shows you similar movies to a movie you're watching (the MORE LIKE THIS section), as shown in the following screenshot:
Here, we can see that while watching Ratatouille, Netflix recommends movies to me that are very similar to Ratatouille. All the top five recommended movies are all animated and produced by Disney Pixar.
However, animated movies...