Steve Valentine

| Married... with Children

| Guy in Line

| Episode: "The Weaker Sex"

| Melrose Place

| Reporter

| Episode: "No Lifeguard on Duty"

| Silk Stalkings

| Nigel

| Episode: "Fevers"

| Ash

| Episode: "The Box"

| Martial Law

| Nigel

| Episode: "Funny Money"

| Art Gallery Owner

| Episode: "Obsession: Part 2"

| Andrew Petrie

| Episode: "Purple Heart"

| Will & Grace

| Kai

| Episode: "I Never Promised You an Olive Garden"

| Professor Pilkington

| Episode: "Psychic Warrior"

| Desmond Rossmore

| Episode: "Lady Evil"

| The Boogeyman

| Television film

| Dharma & Greg

| Roger

| Episode: "Mad Secretaries and Englishmen"

| Warren

| Episode: "Scary Hughley"

| Walter

| Episode: "Pilot"

| Izzy Wilson

| Episode: "Creepy Comics"

| The Mad Hatter

| Episode: "Syd in Wonderland"

| Faust

| Episode: "Val Point Blank"

| Nikki

| Martine

| 16 episodes

| FreakyLinks

| Roger Spence

| Episode: "Subject: The Final Word"

| Zigmund

| Episode: "Mayas and Tigers and Deans, Oh My"

| Eames

| Episode: "Blinded by the Whitelighter"

| Crossing Jordan

| Nigel Townsend

| Main role, 117 episodes

| Boston Legal

| Dan Rice

| 2 episodes

| Tim

| Episode: "The Day the Music Died"

| Himself

|

| House M.D.

| Flynn

| Episode: "You Don't Want to Know"

| Estate of Panic

| rowspan=2| Host/Himself

|

| Episode: "Halloween 2008 Special"

| Von Hayes

| Episode: "Chuck Versus the Break-Up"

| Drop Dead Diva

| PDQ Chief Designer Henri Malik

| Episode: "The Dress"

| The Great Torini

| Episode: "Mr. Monk and the Magician"

| I'm in the Band

| Derek Jupiter

| Main role, 36 episodes

| Wizards of Waverly Place: The Movie

| Archie

| Television film

| The Good Guys

| Nigel

| Episode: "Bait & Switch"

| Avalon High

| Mr. Moore

| Television film

| NCIS

| Miles Wolf

| Episode: "Recovery"

| David Lampard

| Episode: "The French Connection Job"

| Tony Trafford

| Episode: "Class War"

| Drago

| Episode: "I'm With the Band"

| Supernatural

| Chef Leo

| Episode: "Dog Dean Afternoon"

| Val Preston

| Episode: "The Sky's the Limit"

| Billy Lipps

| Episode: "100 Clues"

| Dr. Lesley Moore

| 3 episodes

| Peter Page (Defence Attorney)

| Season 2, Episode 10

| Les Camembert

| Television film

| Hot in Cleveland

| Jay/Joy

| Episode: "Playmates"

| Dr. Napoleon Messier

| Episode: "Painless"

| Gary Korlov

| Episode: "Consumed"

| Kenneth

| Episode: "The Gorilla Dissolution"

| Mike & Molly

| Xander Van Xander

| Episode: "Hack to the Future"

| Ralph

| Episode: "Cat with a Blog"

| The Remarkable Beardini

| Voice only
4 episodes

| Supergirl

| Meta-Doctor

| Episode: "We Can Be Heroes"

| rowspan=2| Mickey and the Roadster Racers / Mickey Mouse Mixed-Up Adventures

| Commander Heist

| Voice
Recurring role

| Voice
Episode: "The Big Cheesy"

| Modern Family

| Doctor Randy

| Episode: "Royal Visit"

| NCIS: Los Angeles

| Frankie Bolton

| Episode: "A Bloody Brilliant Plan"

| Mom

| Rod Knaughton

| 3 episodes

| Monster High: The Movie

| Count Dracula

| Television film

| Monster High 2

| Count Dracula

| Television film

| Mars Attacks!

| TV Director

|

| Dr. Blight

|

| Trojan War

| Ponytail Guy

|

| The Shrunken City

| Ood Leader

|

| Foreign Correspondents

| Ian

|

| Four Seasons Assistant Manager

|

| Return to the Secret Garden

| Ellington

|

| Agent

|

| Gabriela

| Steven

|

| Dead End

| Man in Black

|

| Spider-Man 3

| Model Photographer

|

| Tinker Bell

| Minister of Spring (voice)

|

| Miles Delaney

|

| A Christmas Carol

| Funerary Undertaker, Topper (voice)

|

| Secret of the Wings

| The Minister of Spring

|

| Clean Me

| Joe Banner

|

| Mr. Peabody & Sherman

| Ay (voice)

|

| The Walk

| Barry Greenhouse

|

| Citizen X (unreleased until 2002)

| Mime

| Goosebumps: Escape from Horrorland

| Scarecrow, Stretch

| Uncharted 2: Among Thieves

| Harry Flynn

| Alistair

| Dragon Age: Origins – Awakening

| Alistair

| Dragon Age II

| Alistair

| Tesla Effect: A Tex Murphy Adventure

| Johannsen

| Alistair