Bonnie’s first role was as the toothpick dropping waitress in Rain Man.

Character: Sally Dibbs.
Waitress

Released: 12/16/88
Total gross: $172, 825,435
Director: Barry Levinson

After their father dies, a smooth-talking businessman is reunited with his autistic older brother to whose caretakers his father left a fortune. Needing the money himself, he kidnaps him for a rocky cross-country drive only to discover the void his brother had filled in his empty childhood.
Rotten Tomatoes.com

Transcript of Bonnie’s scene:

Sally Dibbs: Good morning! Coffee?

Raymond Babbitt: Sally Dibbs. Dibbs, Sally. 461-0192.

Sally: How did you know my phone number?

Charlie Babbitt: How did you know that?

Raymond: You said read the telephone book last night. Dibbs, Sally. 461-0192.

Charlie: He, ah, remembers things, little things sometimes.

Sally: Very clever boys. I'll be right back.

Later

Charlie: Miss? Miss, he needs toothpicks. Could you help him? Get him some toothpicks? Thank you very much.

Charlie: Toothpicks! He needs some toothpicks! Could we just get him some toothpicks over here?

Sally: Yeah.

[Sally drops the toothpicks all over the place]

Charlie: Could I have the check? Sorry about the toothpicks.

Raymond: 82...82..82..

Charlie: 82 what, Ray? [to Sally] How much is this?

Raymond: Toothpicks.

Charlie: There's a lot more than 82 toothpicks, Ray.

Raymond: 246 total.

Charlie: [to Sally] Keep the change. How many toothpicks are in there?

Sally: Um, 250.

Tom: Pretty close. C'mon, let's go, Ray.

Raymond: 246

Sally: There's 4 left in the box.

On getting the role:
"I ran all the way to the callback audition on my lunch hour, and then I ran all the way back and went from room to room yelling ‘I got the movie! I got the movie!’"
San Francisco chronicle April 2 2000

Bonnie on working on the movie:
I did the movie, and I was just thrilled, because I thought, you know, I'm on the videotape, someday I'll be in a nursing home, you know --- "Do you want to go to your room, Ms. Hunt?" (old smokers voice) "No! Put in the Rain Man again!"
David Letterman show.

About working with Tom:
"Yeah, I worked with him in Rain Man, my first movie. So cute. But now he's married, so, you know, we've kinda broke up."
Rosie show 1996.

About hitting her marks:
"So, Barry Levinson's telling me, 'Just make sure you hit your mark.' Well, I didn't know what a mark was. I said, 'Yes sir!' Thinking, 'I'm not gonna blow it here. I'm a big actress.' And I do the scene, and I walk the scene a few times, and he says, 'You're not hitting your mark!' And I thought, 'Mark......mark....?' And all I could think of was 'On your mark, get set, go!' So I thought, 'Oh! He wants me to RUN in! I don't know why the waitress would be running, but if Barry Levinson says so....' And he says, 'Okay. Don't forget to hit your mark! Action!' And I come running in and he goes, 'CUT! What are you doing!?' I said, 'I'm hittin' my mark!' He goes, 'Well, don't worry, your mark's right there. You'll hit it.' And I go, 'Mark! Oh!' I see a piece of tape on the floor! And I go, 'Oh, I'm sorry! I was just trying something a little different! Thought the waitress was running that day! Busy in the kitchen!' Yeah! Like all of a sudden I'm METHOD! I have TWO lines!"
Tom Snyder 1995

About her Mom visiting the set:
"It was a combo platter of my mother and myself, because my mom came out to visit...Dustin Hoffman and I met, and then we talked about the fact that I came from a big family -- uh, no one under 200 pounds -- no, seven kids...so he called my mom at Shriner's Hospital where she worked, she worked at Shriner's Hospital for crippled children, and he surprised me and invited my mother to the set in Cincinnati. So, she drove down with my sisters, and she's on the set of this major film -- I have never, I mean, I was still working as a nurse at the hospital, I had gotten three days off to do the movie -- and she comes there and Barry Levinson had, you know, lit these smoke tablets to have like this smoky effect in the restaurant; and he says action, and Tom Cruise is in the middle of this huge thing that he keeps trying to get right, and all of a sudden we hear, (loud cough) 'Ack!! Ack!! Ack!!' Barry yells cut, and now I know it's my mother. And Barry Levinson says, 'Who is that?' And I thought, of course you don't say anything, and just, (in loud 'Ma' voice) "It's me, Barry, and this smoke isn't good for any of us!' -- 'cause she's the mother of seven, what can Barry Levinson do to her? You know, he's just one of the kids to her...