As you have no doubt heard, the recent volcanic activity in Iceland is causing travel headaches for people across the globe. Seeing as how I'm not trying to fly anywhere, I think it's actually kind of cool.
I was first exposed to the volcano when Scott and Justin from Departures travelled Iceland and hiked the volcano. Their guide said it should blow its top some time in the next 5 years (this was in 2007).
I'm not sure if you've seen the pictures posted over at Boston.com, but they are breath-taking.