NOVA In The Path Of A Killer Volcano
This is my all-time favorite volcano-documentary. It is the only full-scale documentary I know of that completely details a major Volcanic eruption, including incredible footage from the evacuation as well as eruption of the VEI-6 eruption of Mt. Pinatubo.
Volcano Hell – Discovery History Science
This documentary discusses a volcanic tragedy in Colombia, and how seismologists began to better understand seismic signals for the purpose of predicting volcanic eruptions.