Matthew Perry

Self (archive footage)

Morgan Fairchild

Self

E. Martin Estrada

Self - U.S. Attorney for the Central District of California

Katy Forrester

Self - Journalist, The US Sun

Greg Kading

Self - LAPD Detective, Ret.

Deborah Walker

Self - Journalist, The Hollywood Reporter

David Feifel

Self - Kadima Neuropsychiatry Institute

Anna David

Self - Author, Party Girl

Hank Azaria

Self - Actor & Matthew's Friend

Jennifer O'Neill

Self - Former Celebrity Assistant

Jennifer Aniston

Self - Actor & Co-Star (archive footage)

Mark Chavez

Self - Physician (archive footage)

Courteney Cox

Self - Actor & Co-Star (archive footage)

Savannah Guthrie

Self - Co-Host, Today (archive footage)

Kenneth Iwamasa

Self - Matthew's Personal Assistant (archive footage)

Marta Kauffman

Self - Co-Creator, Friends (archive footage)

David Letterman

Self - Host, Late Show with David Letterman (archive footage)

Cody McLaury

Self - Ketamine Overdose Victim (archive footage)

Caitlin Morrison

Self - Matthew's Sister (archive footage)

Keith Morrison

Self - Matthew's Stepfather (archive footage)

John Bennett Perry

Self - Matthew's Father (archive footage)

Salvador Plasencia

Self - Physician (archive footage)

Jasveen Sangha

Self - Ketamine Queen (archive footage)

Diane Sawyer

Self - Journalist, ABC News (archive footage)

Lisa Kudrow

Self (archive footage)

Matt LeBlanc

Self (archive footage)

David Schwimmer

Self (archive footage)

Julia Roberts

Self (archive footage)

Erik Fleming

Self - Director/Alleged 'Street Dealer' (archive footage)