"Friends, Lovers, and Strangers!" by Karl Kesel, Stuart Immonen, and Jose Marzan Jr..
The Phantom Stranger wanders around Metropolis, surreptitiously watching Superman for an unknown reason, and trying not to laugh at his new costume.
Finally, he confronts him directly:
...I like the background effect dropped in here. I'm usually not a fan of computer effects in comics, but this one works perfectly, considering the circumstances. Also, nicely drawn by Immonen and Marzan.