As I said before, I was reminiscing. The main reason why is that Doomsday was originally introduced in a Superman story arc named "The Death Of Superman". Superman and Doomsday both die at the end of the graphic novel, and so it sets up events for the next two entries, "A World Without Superman" and "The Return Of Superman". These events were also recently adapted into an animated film, named "Superman: Doomsday".
Now, as many of my family and friends will know, I don't like the Superman character, but I don't despise him. Many of his stories don't appeal to me because he has no flaws- the only comic that had him in that I ever liked was "Superman: For Tomorrow"- one that I recommend to everybody. I do believe, however, that "The Death And Return" is Superman at his best. It was so successful as an arc that there was an audio drama, several animated adaptations (with lots of artistic liberty) as well as a video game.