I don't Know if there is already one if there is sorry. Anyway you add a + sign for a character you like and a - for the one you don't like. Each one starts off with 10 points and then you copy and paste all the characters and we go until we have a winners bracket. the characters do not have a signed point value.

I'll Start

Meredith 10
Cristina 11+
Izzie 10
Bailey 10
Chief Webber 10
Burke 10
McSteamy 10
McDreamy 10
Erica 9-
Callie 10
Addison 10
Lexie 10
George 10
Alex 10