1.His height (6'4) :D
2.His gorgeous, droolworthy body
3.His hair - the length and how it curls sometimes
5.His smile and dimples
6.The few random birthmarks he has on his face
7.He's one of the few characters whose reasons for wanting a normal life I can actually get!
8.His sex scene with Madison in Heart
9.He's got a dark/tainted side
11.He's sweet and caring
12.He's brave and heroic
13.He jumped into hell at the end of S5 to stop the apocalypse
14.His relationship with Dean, just in general and all of it
15.The way he and his father can barely have a conversation without...