• Brown / dark brown / black hair (I don't like blonde guys)
• A tiny bit of a tan but not overdone
• Nice skin
• If it looks good on him, glasses are definately a plus
• Dark blue or green eyes (I used to think that bright blue eyes are better, but it can look a bit too much with very dark hair. Dark blue or green eyes can change colours a bit and people I know with dark blue or green eyes always smile)
• No weird or big ears
• A bit taller than me
• Straight white teeth with NO DOG BREATH
• An irresistible smile
  • And he should show it often
• He has to smell nice

The list next to this one is more important, I don't care for the outside half as much as for the inside (and I hope he does too)