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.
as Miranda
as Mom
as Donna Carter
as Morla
as Zelda Zine
as Samantha
as Dorothy Cromwell-Eastland
as Claire
as Madam Hildie
as Annabella
as Martha (segment "Howl of a Good Time")
as Azreal
as Barbara
as Dr. Slater
as Martha
as Mrs. McCormack
as Doris
as Martha
as Irene Van Hooten
as Babette Schiller
as Donna Carter
as Gina
as Linda Collier
as Patty Newman
as Annabelle
as Stella Fawnskin
as Linda
as Maggie
as Meagan Charms
as Bessie
as Betty
as Jodi's Mom
as Lana Gambol
as Patty Frost
as Fame Longstreet
as Carol
as Marge
as Mother Firefly
as Thelma 'Bunny' Atkins
as Mrs. Freeman
as Helen
as Stephanie
as Police Officer
as Matron Knull
as Science Teacher
as Lynn the Manager
as D.A. Debbie Callahan(1 ep)
as Mala (voice)(2 eps)
as Diane Wyatt
as Callahan
as Helen Frolick(1 ep)
as Coach Judd(1 ep)
as Randa Duane (voice)(2 eps)
as Dita(1 ep)
as Callahan
as Callahan
as Callahan
as Lieutenant Callahan
as Joanna Wilton(2 eps)
as Strickland's Secretary
as Bobbie Sue
as Sally Templeton(1 ep)
as Glenda Morrison(1 ep)
as Vikki Palumbo(1 ep)
as Antoinette Fishman(1 ep)
as June Schwan(1 ep)
as Sergeant Callahan
as Dee Dee Bozwell(1 ep)
as Hospital Nurse
as Edie Franklin(1 ep)
as Rhonda Lee(66 eps)
