So, Grant Morrison did a neat interview at Newsarama yesterday (you can find it here) about 52.
Essentially, he just confirmed everything I thought about the series regarding who wrote what, and it is quite cool to see that my (and, well, most other people, really) take on who wrote what was basically completely spot on. Morrison was responsible for the outer space stuff and the mad scientist stuff (astonishingly, my two favorite bits in the series). Otherwise...
Geoff did almost all the Black Adam bits, Greg did all the Montoya bits, Mark did all the Ralph Dibny scenes except for a couple in issue #30 which I wrote.
There is a lot of other neat stuff in the interview. Well worth giving a read.