Easterbrook was born in Los Angeles. She was adopted when she was nine months old; her adoptive parents, Carl and Helen Easterbrook, raised her in Arcadia, Nebraska. She attended and graduated from Kearney High School and Stephens College. Her father was a music professor and her mother was an English teacher at the University of Nebraska at Kearney.
Easterbrook appeared in about a dozen feature films and over 300 television episodes.
One of her earlier successes was in 1980 as Rhonda Lee beginning with season six of Laverne & Shirley. The role of Rhonda was part of the show's change of locale from Milwaukee to Hollywood.
Easterbrook performed as Debbie Callahan in the Police Academy film series. Easterbrook told author Paul Stenning, "The funny thing is, that's not me at all. I'd never played tough. I'd played all kinds of things, but I'd never played someone who's intimidating or someone that was aggressive sexually. I was of a size that I never played the girl who got the guy. I wondered how I could do it. But I did. I went for the audition and I scared the producer and the director and then they backed up in their chairs and I went 'Oh no, now I really blew it. I scared them'. So I left the audition upset. I didn't get to read the script until I got the part. I thought it was outrageous and so funny."
Easterbrook appeared in Murder, She Wrote, Diagnosis: Murder, Hangin' with Mr. Cooper, Baywatch, Matlock, Hunter, and The Dukes of Hazzard. In 2005, she replaced Karen Black as Mother Firefly in Rob Zombie's The Devil's Rejects, the sequel to the 2003 horror film, House of 1000 Corpses. In 2007, she played security guard Patty Frost in Rob Zombie's remake of Halloween. In 2008, she played as Betty in the thriller/horror film House. In 2010, she starred in The Afflicted. She also appeared on Ryan's Hope as Devlin Kowalski. Her voice work has been featured in several projects, including Batman: The Animated Series and Superman: The Animated Series.
She sang the National Anthem at Super Bowl XVII which landed her starring roles in musicals on Broadway and throughout the country; she recorded a song for the soundtrack of Police Academy: Mission to Moscow.
Easterbrook made a video, Real Beginner's Guide to the Shotgun Sports, the first in a series designed to encourage and prepare nonshooters for their first shooting experience. Easterbrook serves on the board of the National Law Enforcement Officers Memorial Fund, and supports a number of children's charities. Easterbrook is a National Rifle Association member and has served on the board of directors of the California Rifle and Pistol Association.
Easterbrook is married to M*A*S*H writer Dan Wilcox. She was previously married to fellow actor Victor Holchak.
2021
as Donna Carter
2021
as Morla
2020
as Zelda Zine
2020
as Samantha
2018
as Dorothy Cromwell-Eastland
2018
as Claire
2018
as Madam Hildie
2017
as Annabella
2017
as Martha (segment "Howl of a Good Time")
2017
2016
as Azreal
2016
as Barbara
2016
as Dr. Slater
2015
as Martha
2015
as Mrs. McCormack
2015
as Doris
2015
as Martha
2014
as Irene Van Hooten
2014
as Babette Schiller
2014
as Donna
2014
as Gina
2013
as Linda Collier
2013
as Patty Newman
2013
as Annabelle
2012
as Stella Fawnskin
2012
as Linda
2011
as Maggie
2011
as Meagan Charms
2011
as Bessie
2009
as Bet Tannen
2008
as Betty
2007
as Jodi's Mom
2007
as Lana Gambol
2007
as Patty Frost
2007
as Fame Longstreet
2007
as Carol
2006
as Marge
2005
as Mother Firefly
2005
as Thelma 'Bunny' Atkins
2005
as Mrs. Freeman
2003
as Helen
2002
as Stephanie
2002
as Police Officer
2001
as Matron Knull
2000
as Science Teacher
1998
1998
as Lynn the Manager
1997
as D.A. Debbie Callahan
1996
as Mala (voice)
1995
as Diane Wyatt
1994
as Callahan
1993
as Helen Frolick
1992
as Coach Judd
1992
as Randa Duane (voice)
1989
1989
as Dita
1989
as Callahan
1988
as Callahan
1988
as Audrey
1987
as Callahan
1986
as Lieutenant Callahan
1986
1985
1985
as Bobbie Sue
1984
as Sally Templeton
1984
as Glenda Morrison
1984
as Vikki Palumbo
1984
as Antoinette Fishman
1984
as June Schwan
1984
1984
as Sergeant Callahan
1980
1980
as Hospital Nurse
1977
as Edie Franklin
1976
as Rhonda Lee
as Miranda