Acting Teachers


Robert Zimmerman

Starting his own San Francisco classes in 2009 with 7 students, Rob, and later on with Peter, has grown Z/A Studio to over 100 students in 5 classes. In addition to serving as Artistic Director for the Firescape Theatre, Rob has directed several plays including the SF premiere of Engagement, The Importance of Being Earnest, Four Dogs & a Bone, Sexual Perversity in Chicago and Talk Radio starring Peter Allas.  Most recently, he produced and directed a widely acclaimed rendition of Yellow Face by David Henry Wang, with sold out shows in both San Francisco and Los Angeles.

Rob started working professionally at age eleven at The Sharon Playhouse. The next several years included training with Jack O’Brien (Old Globe Theater) and Tony Richardson (British National Theater) and some 60 stage productions from Connecticut to San Diego.


After taking a break to do some globe trotting,  Rob arrived in LA to begin learning about Film & TV. He has appeared in Twin Peaks, HBO’s The Larry Sanders Show, Port Charles and starred in the BBC made for TV movie, Murder, Too. Other film credits include the controversial Don’s Plum with Leonardo DiCaprio & Tobey Maguire and Working Trash with Ben Stiller and George Carlin. Rob also worked onstage in LA’s The Matrix Theater’s ,The Tavern and the Beverly Hills Playhouse as the lead in Prelude to a Kiss.


Rob became a student of Milton Katselas in 1991, and over the next decade plus, he dedicated himself not only to his studies but to the growth of other students as well. He is fascinated with the process of actors discovering what elements of the teaching work best for them. Now, teaching as many as seven classes per week and commuting between Z/A's San Francisco, Los Angeles and Honolulu classes, Rob has for over 30 years helped guide thousands of students to the rewards offered by Milton Katselas’ technique and his vision of ‘a room full of stars.’ He is excited by all the possibilities of expanding his creative efforts with Z/A Studio.

Peter Allas

Eureka Theatre’s production of the 2020 touring “Speed The Plow” by David Mamet marks the ongoing connection of  Mr. Allas & David Mamet. In 2018, Mr. Allas won rave reviews for his teaming with playwright John Patrick Shanley for his innovative production of the  OFF-Broadway Revival of “Danny & The Deep Blue Sea” at the Davenport Theatre in NYC.


Recent San Francisco credits include the award winning  Bay Area Theatre Critics (with 9 nominations) for the Bay Area premiere of “All The Way” by Robert Schenkkan. Recent productions include the Smash hit 2017 revival of “The Motherf$#^ With The Hat” and the 2016  San Francisco, U.S. premiere of “Brilliant Lies” by Australia’s #1 playwright  David Williamson. Next the critically acclaimed productions of 2017 “Lakeboat” by David Mamet, and “Reasons To Be Pretty” at the Firescape Theatre Co. @ Union Square, where he is Co-Artistic Director. 


He began his directing career upon graduation from Fordham University Lincoln Center & Boston University’s School Of Fine Arts at the famed “Circle Repertory Co.” in NYC with “Greek Fables & Tales”, & the premiere of “Winter Chimes” by Robert Haas (Circle Rep Co.), and revivals of “Extremities”(Lincoln Center Lab) by William Mastrosimone,  and “American Buffalo” by David Mamet (La Mama).


After taking a 15 year “hiatus”, Peter returned as an actor to film for “Seinfeld”, “The Soprano’s”,  “The Blacklist" & "MacGyver" reboot to name a few shows. He is also an award winning stage actor for his role in “My Brother Jack” which earned him a  “Supporting actor” award in the Method Fest & Naples Film Fest. Also, in “American Buffalo” as “Teach” at the Washington DC’s Studio Theatre (which set records in 2011) won him a Helen Hayes Award, and in 2016 Carbonell in Southern Florida again with David Mamet’s “Glengarry Glen Ross as “Ricky Roma”.


He received nominations in L.A. and T. C. Critics for directing John Patrick Shanley’s “Savage In Limbo” & “Italian - American Reconciliation”.


 He is co-founder of Z/A Studio & Associate Teaching of Directing.


* He is also a member of all TV/Film & Theatrical Unions and a certified Stage Fighter.