Julia Roberts as Erin Brockovich Albert Finney as Ed Masry Pat Skipper as Defending Lawyer Jack Gill as Defendant Scotty Leavenworth as Matthew Brockovich David Brisbin as Dr. Jaffe Valente Rodriguez as Donald George Rocky Sullivan as Los Angeles Judge Emily Marks as Beth Brockovich - 8 Months Scotty Leavenworth as Matthew Brockovich Erin Brockovich-Ellis as Julia, the Waitress Irina V. Passmoore as Babysitter Ron Altomare as Biker Friend Marg Helgenberger as Donna Jensen Jamie Harrold as Scott Scarlett Pomers as Shanna Jensen Joe Chrest as Tom Robinson Michael Harney as Pete Jensen Mimi Kennedy as Laura Ambrosino Cherry Jones as Pamela Duncan Wade Williams as Ted Daniels Ashley Pimental as Beth Brockovich - 18 Months Tracey Walter as Charles Embry Judge LeRoy A. Simmons as Himself Michael Shamberg as PG&E Lawyer Peter Coyote as Kurt Potter Veanne Cox as Theresa Dallavale Sheila Shaw as Ruth Linwood Jason Cervantes as Check Messenger Norma Maldonado as Woman #1 Julie Wagner as E.R. Admitting Nurse Dawn Didawick as Rosalind Conchata Ferrell as Brenda Irene Olga López as Mrs. Morales Julie Marks as Beth Brockovich - 8 Months Gemmenne de la Peña as Katie Brockovich Adilah Barnes as Anna Aaron Eckhart as George Charles John Bukey as Biker Friend Randy Lowell as Brian Frankel Sarah Ashley as Ashley Jensen T.J. Thyne as David Foil Meredith Zinner as Mandy Robinson William Lucking as Bob Linwood Scott Sowers as Mike Ambrosino Kristina Malota as Annabelle Daniels Cordelia Richards as Rita Daniels Brittany Pimental as Beth Brockovich - 18 Months Larry Martinez as Nelson Perez Don Snell as PG&E Lawyer Gina Gallego as Ms. Sanchez, PG&E Representative Ronald E. Hairston as Car Messenger Scott Allen as Town Meeting Plaintiff Matthew Kimbrough as Bartender Mike Malone as Baxter Tom Tangen as Ned