I'm very much with delericho on Superman Returns. I saw it in the theaters, and it was the first movie I'd seen in a theater since Return of the King that made feel it was time and money well-spent. That said, I've never really had much desire to see it again.
With Man of Steel, I saw the first teaser trailer and thought, "Huh. Looks interesting." But the movie was not on my radar at all.
Second trailer, I thought, "That doesn't look too bad. I might actually have to see that in a theater." But frankly, I was more excited about Iron Man 3, which is a bit sad because I was one of those kids who ran around the house "flying" with a red cape. Superman has always been the hero for me.
Third trailer, Ho. Ly. Crap. That trailer summoned up the 7 year old in me. I've watched the trailer probably about 2,538 times, and right now I want to watch it again. The trailer obliterated the desire to see any other movie other than Man of Steel. I'm ready to camp out for a midnight showing. Then I found out that while it's coming out in June for the rest of the world, it won't come out until August in Japan. So right now, I really hate Japan.
So yes, I am indeed looking forward to Man of Steel.