The DC Multiverse is full of all kinds of stories, which its marvelous competition often can't match. There's a little something for everyone within the publisher's oeuvre, including stories that can make a comic fan out of anyone.
Neil Gaiman's The Sandman is excellent. Working with the greatest artists in comics, Gaiman's tale of His Darkness Dream of the Endless and his family is a masterpiece of epic proportions. It's also done more to get new comic fans than any other book in the modern age. For years, comic readers have given their non-comic reading friends The Sandman and created new fans.
That's the power of The Sandman. Its stories are so brilliant and accessible that they hook fans immediately. It's such an amazing achievement in the mainstream comic industry to have a book like The Sandman, which tells a self-contained story that has stood the test of time.