For all of you going into withdrawal now that Eyjafjallajökull seems to have quieted down, there are two eruptions of note that aren't in the North Atlantic:
Undated image of the Barujari cone at Mt. Rinjani in Indonesia.
Arenal in Costa Rica - which is almost always sputtering away - had a more significant explosive and effusive event today. The volcano produced enough ash, bombs and gas emissions - along with 8 lava flows (or avalanches, depending on the source) - to prompt the evacuation of the National Park around the volcano. Arenal has had numerous strombolian eruptions over the last 42 years since a VEI 3 eruption in 1968 that killed 89 people.
Around the world in Indonesia, Barujari, part of the larger Rinjani volcano, had another explosive event, producing a ~2 km / 5,000 foot ash plume that covered nearby farm fields with ash and (apparently) ejected lava ...