Yeah, he started out with the first arc of the Tomasi/Gleason Rebirth Superman as it was coming out. Then we read All Star and New Frontier together (most of NF went way over his head, but he wanted to know how the Losers in the early Rebirth run ended up there). From there I just let him start to go through my trades as he wanted, so he was all over the place. He's really liked Time and Time Again trade, Birthright, Brainiac, and the whole New Krypton arc.
Yeah, particularly where it seems to have been leaked intentionally right before the FOC for issue 7! They want the controversy to get the orders up for that second arc.