Blackdelta

*Bronze Age Superman (from the Sandman Saga to Crisis on Infinite Earths): to me the most underrated period of Superman. I really don't understand why the ideas of this period are generally left over by DC itself. Some concepts survived after, like some iconic villains (the Parasite), others disappeared (Terra-Man, Amalak, Nam Ek), others surfaced years after but twisted from the original (Faora). It took two decades to bring back some ideas of this period (secondary characters like Steve Lombard and others from the redaction of the Daily Planet). Some stories were really challenging for the character of Superman, but somehow all of this got lost when DC reset the continuity with the Crisis.

1. Silver Age

2. Golden Age

3. Diamond Age/Post Crisis

4. New 52

To me: equals in strenght.

I love Steven Moffat since I saw Coupling for the first time, I will look foward the Doctor Who Christmas Special.
It would be fun to see Moffat deal with the real Superman Mythos. Hope he will write a miniseries or a special for DC someday.

No need to bring back the red trunks. In my own opinion the new costume is perfect, an instant classic.

Parasite, but it seems unlikely due to the nature of the character. So I'm going with Metallo.