My favorites change somewhat frequently but at the moment it's something like this:
5 - Voltaire
4 - Steam Powered Giraffe
3 - Cradle of Filth
2 - Helloween
1 - Seikima II (Seikimatsu)
5 - I love his content and I can sing along to most of his songs.
4 - It's difference but like with Voltaire, I can sing along to their songs...and what's better, I can sing along at work without fear of explaining why I'm singing about necrophelia!
3 - I grew up with this band so chalk this up to Nostalgia. Out of all their albums, my favorites are the ones that are full on narratives such as Cruelty and the Beast and, Damnation and a Day.
2 - I like Iron Maiden but for every Fear of the Dark or, Number of the Beast they have 5 - 7 songs that I don't care about. Helloween is similar to Iron Maiden (in my mind anyway) with the only difference being that I can listen to their albums from start to finish...multiple times over. Loves me the Keeper of the Seven Keys trilogy!
1 - Awesome metal band from Japan. I dunno how to describe them since they went through a few styles.
With an incredibly special mention that goes out to Diana Garnet who performed Spinning World, the ending theme to the latest (32nd I think) season of Naruto. Her voice...does things to me.