The Google Wasteland
There sure is a lot of stuff in Fallout 3. Granted, most of it involves messily shooting things in the face or enduring woeful characterisation, but not all of it. There's a ton of fun quests and epic scenery awaiting the casual adventurer. If, however, you're finding it tough to stray off the beaten path or have fallen into aimless mutant-bothering, the goodly readers of Planet Fallout are busy constructing an interactive, ever-swelling Google map of Washington DC's ravaged environs. Should help you fillet through the game's oodles of quests'n'secrets to find the more interesting bits. Good work, those fanboys.