Cool link!
YouTube is also a great place to look for eruption videos too.
I've got a few on there from a field trip we took to Kilauea when I was in grad school. The eruption is a little less explosive than the current Iceland eruption, and we were able to hike right up next to active flows.
http://www.youtube.com/watch?v=LAVAevf8AM8
I even did some of my own lava sampling (yes it was hot!)
http://www.youtube.com/watch?v=vamQSC74lq4
I did a presentation for one class on the dangers of volcanic ash. Interestingly enough, while jets are at high risk flying through ash clouds, older prop planes fare much better. In one case, researchers wanted to get in situ measurements of the ash cloud composition and flew over a dozen sorties into an active ash cloud using a prop plane. The damage to the plane consisted of scouring of paint off the leading edges, lots of scratching to the windshield (which they countered by applying a thin film like today's screen protectors that could be replaced after each flight). They also filtered the oil in between each flight to remove ash particles.
The reason that jets fare far worse in an ash cloud is because the jet engines burn hot enough to remelt the ash particles that pass through the engine. The molten droplets then deposit on the exhaust vents and cool, plugging up the exhaust and reducing air flow through the engine, potentially causing a stall. Because prop engines operate at a lower temperature, the damage from the ash is limited to abrasion damage--though prolonged exposure would probably cause engine failure due to ash particles contaminating the oil.
My sister lives in Quito, and after the airport had ash dumped on it by Reventador several years back, it took them over two weeks to allow jets to fly again, but prop planes were using the airport just a few days later. The two weeks was because they didn't have much heavy equipment to use for ash removal--a lot of it was done by guys with brooms; and of course they couldn't speed things up by airlifting in heavy equipment because the airport was closed.