Yeah, I think the common denominator - and this is probably going to sound like Acting 101 - but the common denominator is belief in the character in the moment.
“I love playing a dad. It's hard to find family dramas that are genuinely funny.”
“Okay, so, sometimes in life, I can be a score-keeper - someone who keeps track of what he gives and what he gets in return. An annoying quality, to say the least, and I'm sure my wife has your sympathy, but it's made me highly attuned to when and where credit is due.”