Read the 100 most added books to the 100 Books To Read Before You Die Shelf on goodreads.com.
There are many lists of 100 books to read before you die. I like this list the best because it is peer created. For example; "Pride and Prejudice" has been added 57 times and is the top book. "The Secret Garden" is the 50th book at 23 times added to the list.