I absolutely love Itachi. Maybe its the dress, but the mysterious emotionless evil people in anime tend to be my favorites. He's like Sasuke but not as annoyingly pouty. (at least, how sasuke was after the fight with Gaara)
My second favorite is a tie between Chouji and Hinata. I really like Chouji, (maybe because he's like me) because he's the fat kind kid with no recognition. I like Hinata because she's the shy girl who wants to change (again, because she's really like me).
Two of my other favorites would be Gaara (for the same reason as Itachi, but after the time skip thingy he gets even cooler!) and Neji (because the Byakuygan is awesome, I love his fighting style, and he's just a cool guy in general!)