I love how sweetly Murphy says "you'd have better luck using beer" when they go into the police station. He just sounds so little boyish and amused. And that he admits he's scared before their first kill.
They love each other, but they never stop bickering.
How creepily pretty is Norman here?
And he's far creepier to me than Connor at a lot of points in the movie as well. Like here. It's the fact that he's literally more gentle, but just as scary.