Reese Witherspoon
Dr. Elizabeth Masterson
Acting
Mark Ruffalo
David Abbott
Acting
Donal Logue
Jack Houriskey
Acting
Dina Spybey-Waters
Abby Brody
Acting
Ben Shenkman
Dr. Brett Rushton
Acting
Jon Heder
Darryl
Acting
Ivana Miličević
Katrina
Acting
Caroline Aaron
Grace
Acting
Rosalind Chao
Fran
Acting
Ron Canada
Dr. Walsh
Acting
Willie Garson
Maitre D'
Acting
Kerris Dorsey
Zoe
Acting
Alyssa Shafer
Lily
Acting
Gabrielle Made
Nurse Maria
Acting
William Caploe
Nurse Bill
Acting
Shulie Cowen
Nurse Jenny
Acting
Billy Beck
Mr. Clarke
Acting
Diego Sebastian
Bandage Guy
Acting
Cristian Cruz
Orderly Luis
Acting
Benjamin Hughes
Peroxide Rocker
Acting
Cara Vivien Rosenberg
Balloon Girl
Acting
Catherine Taber
Intern Karen
Acting
Chris Pflueger
Abby's Husband
Acting
Paul Cassell
Brett's Friend
Acting
Drew Letchworth
UFO Guy
Acting
Raymond O'Connor
Catholic Priest
Acting
Lucille Soong
Chinese Exorcist
Acting
Joel McKinnon Miller
Lead Ghostbuster
Acting
Victor Yerrid
Ghostbuster
Acting
Bobby Benjamin
Ghostbuster
Acting
Ron Hacker
Blues Guy
Acting
Kara Hamilton
Valerie
Acting
Nicole Wilder
KIm
Acting
Lorna Scott
Hippie Neighbour
Acting
Jeffrey Marcus
Uptight Neighbour
Acting
Ken Takemoto
Chinese Neighbour
Acting
Chaim Jeraffi
Dry Cleaner
Acting
Doug Krizner
Donald
Acting
Zoe Waters
Park Girl
Acting
Jacob Chambers
Kenny
Crew
Karen Harrison
Kenny's Friend
Acting
Ingrid Coree
Waitress
Acting
Lee Burns
Ivan the Bartender
Acting
Amita Balla
Receptionist
Acting
Tim Connolly
Security Guard
Acting
Tim Sitarz
Security Guard
Acting
Ken Clark
Security Guard
Crew
Tony Brubaker
Security Guard
Acting
Jimmy Ortega
Security Guard
Acting
Yeena Fisher
Seamstress (uncredited)
Acting
David Niles
Man on Bicycle (uncredited)
Writing