When searching for an actress to play the part of Elaine, Jerry says they "auditioned millions of people" for the part, including Rosie O'Donnell. During her audition, Julia read a scene with Jerry, but it was so casual, Julia had to jog Jerry's memory.
Julia: I recognized him, sort of-ish. I didn't know the world of stand-up particularly well. I sort of recognized him, and he came out and he was eating a bowl of cereal. And so then we just sort of hit it off.
Jerry: We read a scene together, right?
Julia: Yeah, we did. That's right.
Jerry: Very casually. You read there and I'll read this. See how it feels.
Julia: We did. It was really casual.