What are some interesting things you have done with the Nentir Vale setting? Any special curveballs, custom background modifications, etc. that you've thrown in?
Yeah - my Nentir Vale is a science-fantasy setting. There's a nuclear reactor, a factory built to automate human sacrifice, solar power arrays, stuff like that. Then there are cannibals, an ancient rivalry between Sehanine and Melora, Eladrin who live on the moon (with people from an alternate Earth), refugees from out-of-time, snake cults and the ancient ruins of the yuan-ti, death cults, slavers, dragons up to no good...
There's a lot going on in my Nentir Vale.
I was creating some random tables to generate content for hexes that could be rolled up on the fly. I initially found two tables on Planet Agol (they're on a different blog now, I forget which one) and decided to make a number of them for myself.
As I was making the tables I finally finished The Dying Earth and I read through the posts on Planet Agol. That coloured the entries on my table, which get more sci-fantasy over time. I go from entries such as "A small bog. The water is poisonous; animal skeletons abound. Source of necrotic energy." to ones like "A reactor powered by a mini black hole."
Once the tables were done I made a hex-map version of the Nentir Vale - not a very good one, but it works. I rolled to see what was in each hex. The entries are open to interpretation; as I was fleshing them out, I had science-fantasy in my head and that coloured my interpretation.
The tables can be found in the Hex Crawl document in this post: http://www.enworld.org/forum/4e-dis...-hack-fiction-first-playtest.html#post5208403
Fantastic! Thanks.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.