highest rated
acting
- Some Time Soon → Boris
- Meteor → Russian Premier
- Keefer → Priest
- The President's Mistress → Josef
- Topaz → Meeting Co-Ordinator (uncredited)
- The File on Devlin → The Soviet Ambassador
- Dick Tracy - The Plot To Kill NATO → Markov
- Mission: Impossible (TV) → Minister
- The Time Tunnel (TV) → Alexis
- Batman → Soviet Delegate (uncredited)
- The F.B.I. (TV) → Doriskin
- The F.B.I. (TV) → Ferenc Matyin
- The F.B.I. (TV) → Albert Moehns
- The F.B.I. (TV) → Carl Schmidt
- The F.B.I. (TV) → General
- Run for Your Life (TV) → Straka
- Kraft Suspense Theatre (TV) → Russian Minister
- The Dakotas (TV)
- General Electric True (TV)
- Hitler → Field Marshal Erwin Rommel
- Blue Hawaii → Paul Duval (uncredited)
- Thriller (TV) → The President
- The Roaring 20's (TV)
- Ocean's Eleven → Freeman (Casino Owner) (uncredited)
- Hawaiian Eye (TV)
- One Step Beyond (TV) → Father Leon
- Lock-Up (TV)
- Judgment at Nuremberg → Frederich Hoffstetter
- 77 Sunset Strip (TV)
- Sea Hunt (TV)
- Behind Closed Doors (TV)
- Auntie Mame → Vladimir Klinkoff (uncredited)
- Missile Monsters → Mota
- Richard Diamond, Private Detective (TV) → Van Zandt
- The Thin Man (TV)
- Hawkeye and the Last of the Mohicans (TV) → Gen. Montcalm
- Kelly and Me → Milo
- Bailout at 43,000 → Dr. Franz Gruener
- Playhouse 90 (TV) → Frederich Hoffstetter
- The Eddy Duchin Story → Philip
- Matinee Theater (TV)
- The 20th Century Fox Hour (TV)
- Crossroads (TV)
- Commando Cody: Sky Marshal of the Universe (TV) → The Ruler
- Creature with the Atom Brain → Dr. Wilhelm Steigg
- King of the Carnival → Zorn (as Gregory Gay)
- With This Ring
- Charge of the Lancers → Cpl. Bonikoff
- Jungle Man-Eaters → Leroux
- The Juggler → Harry (uncredited)
- Savage Mutiny → Carl Kroman
- Remains to Be Seen → Headwaiter (uncredited)
- Flame of Calcutta → Amir Khasid
- Commando Cody: Sky Marshal of the Universe → The Ruler
- Terry and the Pirates (TV)
- The World in His Arms → Colonel Paul Shushaldin
- Bal Tabarin → Jean Dufar
- Hallmark Hall of Fame (TV) → Herr Sokolov
- Hallmark Hall of Fame (TV) → The Soviet Ambassador
- The Magic Carpet → Caliph Ali
- Peking Express → Stanislaus
- The Whip Hand → Sweitart (uncredited)
- Flying Disc Man from Mars → Mota
- Harbor of Missing Men → Captain Koretsky (as Gregory Gay)
- Black Magic → Chambord / Monk (as Gregory Gay)
- Dancing in the Dark → Headwaiter
- The Bachelor and the Bobby-Soxer → Maitre d'Hotel
- The Corpse Came C.O.D. → Director
- Blackmail → Jervis (as Gregory Gay)
- The Trespasser → Mr. E. Charles
- So Dark the Night
- Passkey to Danger → Mr. Warren
- Cornered → Perchon, German Banker
- A Song to Remember → Young Russian (uncredited)
- I Love a Mystery → Dr. Han (Uncredited)
- Paris Underground → Tissier
- The Tiger Woman → Joe Sapphire (as Gregory Gay)
- The Purple Heart
- Seven Doors to Death → Henry Butler aka Gregor (as Gregory Gay)
- Casablanca → German Banker Refused by Rick (uncredited)
- One Dangerous Night → Dr. Eric Budenny (as Gregory Gay)
- The Secret Code → Nazi Agent Feldon
- Fall In → Karl, Nazi Wiretapper
- I Wake Up Screaming → Headwaiter
- They Dare Not Love → Von Mueller
- Down Argentine Way → Sebastian
- Ninotchka → Count Alexis Rakonin
- The Three Musketeers → Vitray
- Hotel for Women → Fernando Manfredi
- On Your Toes → Vassilly - Slave in Ballet
- Paris Honeymoon → Count Georges De Remi
- Too Hot to Handle → Popoff
- Bulldog Drummond's Peril → Raoul
- Breakdowns of 1938 → Prince Boris (archive footage) (uncredited)
- Love, Honor and Behave → Count Humbert
- Straight, Place and Show → Vladimir Borokov - Russian Jockey
- Tovarich → Count Frederic Brekenski
- Wise Girl → Prince Leopold
- Mama Steps Out → Dmitri
- Lancer Spy → Capt. Freymann
- First Lady → Prince Boris Gregoravitch
- Prescription for Romance → Dr. Paul Azarny
- Dodsworth → Baron Kurt Von Obersdorf
- Charlie Chan at the Opera → Enrico Borelli
- Under Your Spell → Count Raul Du Rienne
- Hollywood Boulevard → Russian Writer (uncredited)
- That Girl from Paris → Paul Joseph DeVry (uncredited)
- British Agent → Mr. Kolinoff
- Handy Andy → Pierre Martel
- Kept Husbands → Mons. Prinz (uncredited)
- Young as You Feel → Pierre
- Renegades → Dmitri Vologuine
- The Song of the Flame
- What a Widow! → Baslikoff
- High Society Blues → Count Prunier
- They Had to See Paris → Prince Ordinsky (uncredited)
- The Case of Lena Smith → (uncredited)