NASA has published an impressive snap of the recent eruption of the Sarychev Peak volcano, captured by the crew of the International Space Station.
More: http://www.theregister.co.uk/2009/06/25/sarychev_peak_eruption/
NASA: http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=38985
APOD: http://apod.nasa.gov/apod/ap090625.html (in 3D)