I think the idea is to try and understand everything about the characters and where the character is coming from, from their point of view, why they say what they do. And not, 'Oh, but I would never say that. Why does the character say that?' But then making it as personal as possible.
I'd always been fascinated by people who allow themselves to be so rude and irritated and foul-mouthed and hostile, but usually you can sense there's something vulnerable beneath them - a shield they use to protect that vulnerable side. Finally, when they expose that soft spot, it's kind of touching.
I like a restaurant called Bruci, and there's some really nice people who work there and good food. They change their menu a lot, so maybe that's what keeps me coming back. I never know what I'm going to get.