I'd reorder this list as
1. DC One Million
I feel that the story opened things up for the individual titles to really be imaginative. The actual mini-series is Grant Morrison at his best. He introduced some of his high-level concepts, but nothing too out-there. Also, there were so many great moments from the "lesser"-JLA members and some non-members. Nightwing answering Oracle with a crack about his "Batman voice," Ray Palmer & Barbara Gordon playful flirting, Steel's "S-shield comment," Kyle's "feat," and Batman chalking things up to a learning experience, the perfect ending for Vandal Savage, and "Duty roster's on the fridge."
2. 52
A great story that made some major changes and introduced a lot of great concepts to the DCU. While World War III kind of diminishes it a little, overall, it was great.
3. Final Crisis
Okay, I admit it, I love Grant Morrison. While always menacing, Darkseid reborn in Dan Turpin (though I miss "Terrible Turpin," I have to say, it was a great choice, given their history) was terrifying. Unfortunately, Morrison went too high concept with Superman Beyond (though Limbo was awesome) and its effect on the ending.
4. Blackest Night
Like some of Johns' work, I think it went on a tad too long. The delay between issues didn't help. Neither did the fact that you really needed to read the main mini-series, and both Green Lantern and Green Lantern Corps, at the very least to follow the story (not an issue for me, since I already followed both, but a bit much for someone who only collected one or the other, or was interested in the miniseries).
As for Crisis on Infinite Earths, while I admire what it accomplished and the fact that it set the tone for the crossovers to follow, I think Marv Wolfman is a bit lacking as a writer. It kind of drags in parts and his dialogue leaves a lot to be desired. However, I am a bit biased after reading Scipio Garling's take down of CoiE.
I would also rate Armageddon 2001 a bit higher, but that may be nostalgia. Detective Comics Annual #4 is one of my favorite Batman stories, ever.
And, no love for Eclipso: The Darkness Within? The interesting thing about this crossover, to me, is that when it started, Guy was a Green Lantern, but he had his Sinestro ring when it ended. Not sure how they accounted for that, but it did lead to a great moment where Guy arrives with plasma from the sun itself to free Superman from being possessed by Eclipso. It's one of my favorites, again for nostalgia reasons, but it does have some weaknesses (the Justice League Europe and Flash annuals were barely coherent stories, despite the latter being one of the first Flash comics by Mark Waid). Also, they were inconsistent about those who were possessed. In some comics, Eclipso took over as soon as they were possessed, in others, the possessed had to seek vengeance on whatever made them angry while holding the black diamond.
. It seems that almost every time it's done, Batman and Green Lantern more or less remain the same with a few changes to the time scale and origins, while other titles such as Superman and Wonder Woman seem to be completely revamped. Even then, stuff from earlier continuity makes it's way into current stuff-such as Superman's dog Krypto and the Kara version of Supergirl.
