Regarding how he approached his character’s performance skills (or lack thereof), Hader says:
“I watched a lot of true crime shows, because the reenactments on true crime shows are pretty bad, so that was helpful. But mostly it’s just thinking about what the reality of that would be and not thinking too much about the comedy, and it kind of works. When you push the comedy it starts to feel like you’re reaching for something that might not be there. So if you just have him read his lines — like I think for Barry, acting to him is when you would go around class in junior high and read out paragraphs of To Kill a Mockingbird, like that’s acting to him, just a speech class. You try to play the reality of it.”(via)]]>