Mt. Etna in Sicily is putting on a brilliant show today, which you can watch here. (You’ll need to refresh the page every five minutes or so.) See Eruptions for commentary. (Scroll down to the later comments.)
Update: The show’s over for now. According to Boris Behncke, a vulcanologist in Sicily, “This has been a typical lava fountain from the Southeast Crater (that is, the vent on its east flank which seems to have completely taken over the job from the old vent at its top), with jets rising 300-500 m – maybe a bit more – and lasting for little more than one hour.”
Everything you ever wanted to know about Mt. Etna: here, here and here.
Update II: For those who missed the show, here’s a video: