Maybe this is a dumb question, but what’s up with all the lightning in these pictures? Is there some correlation between volcanic eruptions and lightning, or lightning storms?
Here’s an explanation. It’s basically rapid charge separation caused by the eruption.
The lightning is cool, but I like this picture better.
Gearing up for 2012!
Fantastic pics, but we need them in higher res, dammit! 
Note: There’s a downside to upgrading your monitor. . .