First impressions are at the gut level and instanaeous and mysterious too. I don't know what causes them. I react to people instinctively.
I'm sometimes impressed by the amount of money someone has.
Especially if the money was acquired in a most unusual way. I like to hear the stories behind it.
Kindness, first and foremost. Humor , honesty, great hugger, sexual sparks, foot massage, interesting, good conversation, easy-going, great kisser,
I can dig it
His/her charachter, principles, ideas, how he treats other people
Giosk well said
The money they don't make and how they get thriugh
The size and type of hat they wear on a sunny day.
Things don't impress me much anymore, first impression can be so misleading. Time and actions over long period of time. There is so much acting going on, I simply sit, observe and wait to the risk of missing opportunity. Not a materialistic person... someone wants to impress me... let's see how you do in the dance floor.