Gregory Phillip "Greg" Grunberg (born July 11, 1966) is an American television actor. He is best known from starring as Matt Parkman on the NBC television series Heroes. Other notable roles included the characters Sean Blumberg on Felicity (1998–2002) and Eric Weiss on Alias (2001–2006), both created and produced by childhood friend J. J. Abrams.
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Duster
Abbott · (8 episodes)
2025

The Holiday Junkie
Darren
2024

Getting LOST
Self
2024

Satanic Hispanics
Detective Arden
2022

The Fabelmans
Bernie Fein
2022

Pictionary
Self · (1 episode)
2022

Under the Lights
911 Operator
2022

The Horror Crowd
Himself
2020

Max Reload and the Nether Blasters
Eugene Wylder
2020

The Skywalker Legacy
Self
2020

Burning Dog
Smythe
2020

9-1-1: Lone Star
George · (1 episode)
2020

Star Wars: The Rise of Skywalker
Snap Wexley
2019

The Empire Strikes Door
2019

The Boys
Agent Bill Pearson · (1 episode)
2019

1st Born
Dr. Cooper
2019

The Rookie
Larry Macer · (1 episode)
2018

A Star Is Born
Phil (Jack's Driver)
2018

Have It All: The Movie
Principal
2018

25 Words or Less
Self · (28 episodes)
2018

Castle Rock
Andersen · (4 episodes)
2018

Paterno
Scott Paterno
2018

Suicide Squad: Hell to Pay
Steel Maxum (voice)
2018

Tomboy
James
2018

The Cloverfield Paradox
Joe (voice)
2018

The Saint
Detective Garces
2017

Goliath
Greg Wetzel · (1 episode)
2016

Geeking Out
Self - Host · (9 episodes)
2016

Star Trek Beyond
Commander Finnegan
2016

Star Wars: The Force Awakens
Snap Wexley
2015

Baby, Baby, Baby
2015

Tales of Halloween
Alex Mathis
2015

Heroes Reborn
Matt Parkman · (5 episodes)
2015

Life in Pieces
Mikey · (2 episodes)
2015

Win, Lose or Love
Hal Harrington
2015

Let's Kill Ward's Wife
Bruce
2014

The Flash
Tom Patterson · (2 episodes)
2014

The Mysteries of Laura
Kurt Baronson · (1 episode)
2014
Divide & Conquer
Evan
2014

Big Ass Spider!
Alex Mathis
2013

Masters of Sex
Gene Moretti · (6 episodes)
2013

End of the World
Owen Stokes
2013
Doubt
Mark Calzonetti
2013

It's Dark Here
Dr. Wagner
2013
Match Game
(2 episodes)
2012

Baby Daddy
Ray Wheeler · (2 episodes)
2012

The Client List
Dale Locklin · (13 episodes)
2012

Super 8
Sitcom Actor
2011

Love Bites
Judd · (8 episodes)
2011

Hawaii Five-0
Jeff Morrison · (2 episodes)
2010

Group Sex
Jerry
2010

Bond of Silence
Detective Paul Jackson
2010

Kill Speed
Moore
2010

Magic
Detective Davis
2010

Dear Consumer (Robot Chicken's Full-Assed Christmas Special)
Odin (voice)
2009

Celebrity Ghost Stories
(1 episode)
2009

Tattoos: A Scarred History
Self
2009

Star Trek
Stepdad (voice)
2009
Band from TV: Hoggin' All the Covers
Self
2008

Heroes Unmasked
Himself · (1 episode)
2007

Head Case
Self · (2 episodes)
2007

Heroes
Matt Parkman · (78 episodes)
2006

Psych
Jay Gianukos · (1 episode)
2006

The Jake Effect
Nick Case · (7 episodes)
2006

Mission: Impossible III
Kevin
2006

What About Brian
Samaritan Driver (uncredited) · (1 episode)
2006

The Darkroom
Bob
2006

Criminal Minds
Chris Callahan · (2 episodes)
2005

Hell's Kitchen
Self - Restaurant Patron · (1 episode)
2005

American Dad!
Bjorn (voice) · (1 episode)
2005

I Love the '90s: Part Deux
(10 episodes)
2005

House
Ronald Neuberger · (1 episode)
2004

Lost
Seth Norris · (3 episodes)
2004

I Love the '90s
Self · (10 episodes)
2004

The Ladykillers
TV Commercial Director
2004

The Ellen DeGeneres Show
Self · (1 episode)
2003

Malibu's Most Wanted
Brett
2003

Jimmy Kimmel Live!
(1 episode)
2003

Austin Powers in Goldmember
Shirtless Fan 'T'
2002

Monk
Jack Leverett · (1 episode)
2002

The Dead Zone
Frankie Cantrell · (1 episode)
2002

Icons
(1 episode)
2002

The Medicine Show
Barry
2001

Alias
Eric Weiss · (68 episodes)
2001

CSI: Crime Scene Investigation
Len Bryant · (1 episode)
2000

Hollow Man
Carter Abbey
2000

Law & Order: Special Victims Unit
Detective Mark McDaniels · (1 episode)
1999

The Muse
Four Seasons Hotel Security
1999

Felicity
Sean Blumberg · (77 episodes)
1998

Felicity
Sean Blumberg (voice) (uncredited) · (1 episode)
1998

V.I.P.
Loeb · (1 episode)
1998

Mr. Murder
Dr. Gutheridge
1998

With Friends Like These
Rudy's Assistant - Sean Nusbalm
1998

Oh Baby
(1 episode)
1998

BASEketball
Wilke - New Jersey Informant
1998

Senseless
Steve
1998

Mike Hammer, Private Eye
(1 episode)
1997

Picture Perfect
Date #1 (uncredited)
1997

Dinner and Driving
Michael
1997

Profiler
(1 episode)
1996

The Trigger Effect
Double Date Guy
1996

The Pallbearer
An Abernathy Cousin
1996

Pacific Blue
Scott Rhinehart · (1 episode)
1996

Ned and Stacey
Nick · (1 episode)
1995

Future Shock
Limo Driver
1994

Diagnosis: Murder
Brad Carver · (1 episode)
1993

NYPD Blue
Joey Schulman · (1 episode)
1993

Late Night with Conan O'Brien
Self - Guest · (1 episode)
1993

Witchcraft V: Dance with the Devil
Manager
1993

Melrose Place
Gatman · (1 episode)
1992

The Tonight Show with Jay Leno
(1 episode)
1992

Silk Stalkings
(1 episode)
1991

Frankenstein: The College Years
Kozlowski
1991

Stolen: One Husband
Best Man
1990

The Simpsons
Bad Robot Security Guard (voice) · (1 episode)
1989

Baywatch
(1 episode)
1989

Murphy Brown
(1 episode)
1988