Jeff Garlin, for this brilliantly catchy piece of work from his film, I Want Someone To Eat Cheese With (trailer)...
Beth: Did you want some more ice cream?
James: No, I really gotta stop eating ice cream. I need to lose some weight.
Beth: Yeah, I used to be chubby when I was a little girl.
James: Yeah, but I'm not a little girl.
Beth: No, you're a big girl.
James: Big pretty girl.
Beth: Big pretty girl wanna go for a walk?
Now, I don't know if this bit was actually written by Garlin, or improvised by him and his co-star, Sarah Silverman, but I think it's the best part of a movie I haven't even seen yet.