Everyone is different in what they find attractive about a member of the opposite sex, for me one of the main things is eyes.....I love looking deep into someone's eyes, you can really tell a lot about them and the sort of person they are, you can get lost in them, they can tell you alot about how that person is feeling, if they are happy or sad, curious or relaxed.
I so often find that certain eyes, the ones that are sparkly draw me in very quickly, and before I know it I am not listening or noticing what is going on around me, this can be useful sometimes but not all of the time :)
audiodox:
Eyes are a definite starter for attraction, best when paired with a keen mind. That, to me at least, is more permanently attractive about a person.
user12335:
I totally agree @audiodox a keen mind that is willing to discover and explore, there is something truly amazing about our minds and how they work, how our reactions to different situations are born our of our reptilian brain......we as humans are truly an amazing species :)