Superman/Batman Annual No. 3
 

Properly done, mixing sf and fantasy will yield a horror story any genre fan would love. And DC's done just that. And they couldn't have picked a better creative team to help realize it. Len Wein, long time comic scribe returns to the scene of the crime and leaves his distinctive prints all over the place and Chris Batista delivers visuals no cameraman could possibly capture. Recommended without qualm. :)