1. The actor's natural charisma
2. The actor's realism is acting that particular roll (be they play it straight or over the top). This makes me forget the person thy are because they have so immersed themselves into the character.
3. How the actor surprises me by doing something different than we have seen before from them. (This come from excellent script and directions)
3. Brad Pit as Tristen in 'Legends of the Fall'

2. Val Kilmer as Doc Holiday in 'Tombstone'

1. Johnny Depp as Captain Jack Sparrow in the 'Pirates of the Caribbean'.
