EASY:
1 - Intelligence - mental intercourse sets the stage for the physical side of the relationship
2 - Passion - there, for me, has to be a smouldering underneath the exterior
3 - Sense of humor - nothing sexier than a woman who can make you laugh and who can also laugh at herself
4 - Appearance - There, for me, has to be a sense of grace, dignity and refinement - I'm truly weak for light eyed brunettes...always have been
5 - Kind and generous heart - no explaination needed
6 - Artistic in some way - the creative side of a woman has always attracted me, be it an actor, writer, sculptress etc.....goes back to the passion thing
....I might add some after some thought, but those are my top things