Kao has appeared in films such as Bridesmaids (the woman from the couple in Kristen Wiig's jewelry store), as Julie Wong in Georgia Lee's Red Doors (Best Narrative Feature Award in the NY, NY Competition at the Tribeca Film Festival), Funny People, Home Game (as Gail), the J. J. Abrams-penned TV movie pilot The Catch (as Mrs. Yasasui), and the TV movie Supreme Courtships (as the Doctor).
Kao also appeared in a number of short films and independent films, as the female protagonist Mai in Kevin Lau's Made in Chinatown, which won Best Short, Best Writing and Best Actor (Tim Chiou) at the 2013 8th Annual NBC Short Cuts Film Festival,[2][3] with Kao also winning a Best Actress award for her starring role in that film at the 2013 Asians on Film Festival as well.[4] Susie Choi in Christine Yoo's Wedding Palace, as Marianne Quon/Lai Yee ("The Technicolor Movie Queen" of Chinese Cinema) in Timothy Tau's short film bio-pic Keye Luke, as Delia in Cynthia Liu's "Red Thread," as Linda Ahn in Philip Chung's "A Ribbon of Dreams" and as the Mother in James Huang's "Chapter 21."
She has also provided her voice talents to the Hong Kong underworld video game Jet Li: Rise to Honor starring Jet Li and has also produced Kerri Higuchi's film, Mr. Isaac and a comedy short film entitled The Cure for a Diseased Life directed by Ray Chang. Kao has also appeared in commercials from Target, Microsoft, MasterCard, Dell, Capital One, Travelocity and more.
Kao has also appeared in various theatrical productions from the Lodestone Theatre Ensemble (Tennessee Williams' Suddenly, Last Summer, and as Juliet in Romeo and Juliet), East West Players (as Jing-Mei in EWP's production of The Joy Luck Club and as Rose in EWP's production of Philip Kan Gotanda's Sisters Matsumoto), Company of Angels (as Angie in Vasanti Saxena's Sun Sisters), the Center Theater Group and the Mark Taper Forum (as Hae-Joon in BFE at the New Works Festival), The Sacred Fools Theater Company (as Ching in The Caliban) in Los Angeles, California, as well as South Coast Repertory (in 99 Histories as part of the Pacific Playwrights Festival), the Rude Guerilla Theater (as the Dictator in Howard Barker's Wounds to the Face) The Cleveland Playhouse (as Hannah in Judy Soo Hoo's Solve for X for the Next Stage Festival, opposite Kelvin Han Yee and Roger Fan) and The Met Theater (as Clary, the lead role in Bill's Eye).