Mount St Helens 1980
Probably the most spectacular volcanic event ever recorded. This film is very informative about the science behind the eruption. 39 minutes into the video there is an interesting connection: the lessons from Mount St Helens help scientists to know what was going to happen with the Montserrat volcano and evacuate the population.
Montserrat Soufrière Hills volcano
The case of the Montserrat volcano is a good example for studying the human consequences of tectonic hazards. It shows the range of ways in which human life was disrupted in short and long-term on the island of Montserrat: https://www.youtube.com/watch?v=jBQk2dzo9yM
These films shows continuing volcanic activity in September 2009 and 2010: