2. The Harry Potter Series This series by J.K. Rowling about a boy who goes to a mysterious wizarding school is great for both children and middle-aged weirdos.
3. The Games of Thrones Series Yes, this series by George R.R. Martin takes the third spot, being both a series and a TV show and all.
4. The Chronicles of Narnia Being another classic, Narnia takes the fourth spot. Fun Fact: C.S. Lewis and J.R.R. Tolkien were good friends.
5. Percy Jackson and the Olympians (I chose this over the Inheritance Cycle because the Percy Jackson movies were more successful than Eragon (the movie.)