For me it would have to be the song "Black and Silver" by Xandria. The vocals and lyrics make me want to drool and the front woman of Xandria is sexy as hell.

Seriously, almost every this song comes on Pandora, I have an urge to masturbate haha

Here's a link to the song for those who are interested:

https://www.youtube.com/watch?v=e2D4jSbDzU8