woodwardiocom

For the Pathfinder (crypto-D&D) game I'm running, I'm using one of their published adventure paths. The degree to which Paizo supports their adventure paths is positively freaky for someone used to old-school modules. Here's the sort of stuff they offer (not all paths have all of these) (and I'll use Reign Of Winter for most examples):

The path itself, typically six 100-page books, released monthly, each detailing part of a series of connected adventures that will take the player characters from 1st level to 20th.
A player guide for the path, offering advice on character creation.
They will usually release a Player Companion at about the same time, which covers a topic of relevance to the path.
A map pack, sometimes paper, sometimes in PDF (with both GM and player modes, so you can hide the secret doors).
A deck of item cards, detailing the magic items the PCs will acquire along the way.
A deck of face cards, for the major NPCs.
A custom set of dice (strictly a vanity item, but very pretty).
Metal miniatures for some of the major characters.
Random-packed fully-painted plastic minis for many of the major NPCs and opponents.
A PDF of "cardboard heroes" style minis, to be printed out, folded up, and used as miniatures for every significant NPC and opponent.