Umm intelligence, compassion, understanding, physical beauty, origniality. These are all basic tenants of human attraction. Everyone is looking for the same thing fundamentaly.
If you want to know specifics regarding physical features then I am sorry but it differs for each man. Some people look for certain things over others, and I can't explain this. With this said, you can't really go wrong with the common features (use your imagination and I'm sure you can settle on a small list). A beautiful face (i.e. proportional features, piercing eyes, endearing smile, etc.) is always an eye catcher.