Amazing NASA Imagery
UPDATE: NASA has a good shot of the current (30-August-2009) Los Angeles County fires. It isn't quite as spectacular as the previous images since the fire is smaller and the smoke is drifting overland, but it is news.
NASA has provided satellite views of the recent Southern California wildfires. These pictures bring home both the enormity and insignificance of the fires. Compared to the land mass of the US they are small spots, but the smoke they are producing is prodigious.
High resolution versions of other great photos available here.