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Greg Sestero was born and raised in the San Francisco Bay Area. With European parental influence, Greg speaks both French and English. He traveled extensively early on, and holds dual citizenship between France and the United States. At 17 years old, Greg signed with a prominent San Francisco talent agency. The same year, he left for Milan and Paris to work for designers such as Giorgio Armani and Gian Franco Ferre. Greg returned focused on acting. He began studies at the American Conservatory Theatre in San Francisco. He landed his first role at age 18, on the CBS hit show Nash Bridges (1996). This followed with a role in the Golden Globe nominated film, Patch Adams (1998) starring fellow San Francisco native, Robin Williams. Soon thereafter, Greg was signed by well-known Hollywood agent, Iris Burton, which prompted his move to Los Angeles. Sestero starred in the notorious The Room (2003), which gained an international cult following as the best worst movie ever made. in 2013, Sestero wrote a book entitled The Disaster Artist, chronicling his experience making the film and working with its enigmatic director Tommy Wiseau. The book went on to become a critically acclaimed bestseller. In February 2014, the book was optioned to made into a feature film by Hollywood superstars James Franco and Seth Rogen.

First Feature
as Himself

The Room Returns!
as Chris-R

Conjuring Tapes
as Greg

Point
as (voice)

Bampire
as Park Ranger

On the Edge of Freedom
as Liam

The Film Café
as Himself

The Founder Effect
as Decklan Bakker

The Christmas Tapes
as Geoff/The Owner’s Manual

Puppet Master: Doktor Death
as André Toulon (archive footage) (uncredited)

Infrared
as Geoff

Best F(r)iends: Less is More
as Jon Kortina

Miracle Valley
as David

The Caring Only Cry at Night
as Rick Edwards, Motivational Speaker

The Haunting of Bly Manor
as Fiancé

Cyst
as Bill

The Wrong Wedding Planner
as Mr. Hanson

Time Warp Vol. 3: Comedy and Camp
as Self

SpaceWorld: "A Good Lesson"
as Drogol

Best F(r)iends: Volume 2
as Jon Kortina

Four in a Blanket
as Coach Sooie (Voice)

Oh, Hi Mark: Making a Disaster
as Self

Best F(r)iends: Volume 1
as Jon Kortina

The Disaster Artist
as Casting Agent (uncredited)

VHS Massacre: Cult Films and the Decline of Physical Media
as Self

Livers of Darkness: Making "Dude Bro Party Massacre III"
as Self

Dude Bro Party Massacre III
as Derek

The Pit and the Pendulum
as The Ex

Alien Presence
as Ash

The Brotherhood V: Alumni

Accepted
as Frat guy (uncredited)

Behind the Scenes of "The Room"
as Self

Puppet Master: The Legacy
as Young Andre Toulon (Archive Footage)

The Room
as Mark

Retro Puppetmaster
as Andre Toulon

EDtv
as Roach

Patch Adams
as Jaime

Gattaca
as Gattacan Citizen (uncredited)

Forbidden Sky