Hitchhiker's Guide used a narrator with humorous effect to provide needed information. The narration never seemed to disrupt the flow, but add to it.
Peter Hamilton provides limited info-dumping while describing the action.
Edit: For example, the narrator of the Hitchhiker's Guide is describing the Infinite Improbability Drive, which rescues the two main characters after they are ejected into space as follows.
The principle of generating small amounts of finite improbability by simply hooking the logic circuits of a Bambelweeny 57 Sub-Meson Brain to an atomic vector plotter suspended in a strong Brownian Motion producer (say a nice hot cup of tea) were of course well understood — and such generators were often used to break the ice at parties by making all the molecules in the hostess's undergarments leap simultaneously one foot to the left, in accordance with the theory of indeterminacy.
Many respectable physicists said that they weren't going to stand for this, partly because it was a debasement of science, but mostly because they didn't get invited to those sorts of parties.Douglas Adams, The Hitchhiker's Guide to the Galaxy
Hamilton, in his work Fallen Dragon, describes that since alien biology was incompatible with humanity, colonization required, at great expense and difficulty, radiological sterilization of the soil, to eliminate all non-terrain organic material. The information, woven in naturally as the lead character interacts with the world, never feels like an info dump.