Ooops, missed one and that's called "The Big Island" because it's errrm the biggest.
Only 150k live there though and it's the home of the world's most active volcano. Right now, it's gone berzerk and is quite a show!
Only seen it on youtube, but here's a link
http://uk.youtube.com/watch?v=N4Q4HXlCxkE
It's always flowing lava, but not quite as spectacular as right now.
Maui is where you need to be anyway.