I recently have had a few from here and the other sites ask me about where to visit if they take a vacation to Hawaii.
The volcano on the Big Island has been flowing from Kilauea since since 1983 has been providing some excellant photo opertunities. Heres a pic of the lava flow hitting the water yesterday. With so much activity going on, A Helo flight over the Lava Fields though not cheap would be well worth it.
http://hvo.wr.usgs.gov/kilauea/summary/main.html