(written from a Production point of view)
Cynthia Lee Abruzzini, also known as Cynthia Brian (born 18 February 1951; age 67) is an actress, author, coach, radio host, and philanthropist who appeared as a San Francisco street passerby in Star Trek IV: The Voyage Home. As a background performer, Brian received no credit for this appearance. 
Brian was born on a farm in Napa Valley, Northern California. During her time on college she was named "The Outstanding Teenager of California in 1969" and teenage ambassador of Holland where she studied for eighteen months and also worked as foreign correspondent for the local newspapers. She earned a BA in History and a Minor in French from the University of California in Berkeley and is a certified interior designer who founded her own company, Starstyle Interiors and Designs.
Since 1998 she's been hosted the radio show StarStyle® Be the Star You Are! for which she also works as producer. As an author, Brian has released several column, calendars, and books such as Be the Star You Are!: 99 Gifts and Chicken Soup for the Gardener's Soul. Beside several credits as a producer, casting director, and author, Brian is also a motivational and international speaker who is traveling around the world.
As a trained actress, Brian studied under coaches such as Ann Brebner, Joan Kenley, Joel Roberts, and Sal Dano, and has worked in several commercials, print-ads, and television shows including hosting appearances in DayBreak, Bay TV, Holiday Travel Guide, Animal Cuts, The Business of Showbusiness, Life in balance, and Design 101.
Among her acting performances are supporting and featured roles in the television drama Raid on Entebbe (1977, with Tige Andrews, David Opatoshu, Stephen Macht, and Robin Gammell), the comedy Die Laughing (1980, with Larry Hankin, Carel Struycken, and Scott DeVenney), stunt work in the action film 48 Hrs. (1982, with Denise Crosby), the James Bond film A View to a Kill (1985), Francis Ford Coppola's drama Peggy Sue Got Married (1986, co-starring Catherine Hicks), the thriller The Dead Pool (1988, with Marc Alaimo), the drama Bee Season (2005, with James D. Weston II), and guest roles in the television series CHiPs (1978, with Robert Pine) and Nash Bridges.