highest rated
acting
- The Hell's Gate → Dr. Johns
- Wartime → professor Amundsen
- Seven Dangerous Women → Enrico Cavallari
- Return of the Saint (TV) → Scheffer
- The Biggest Battle → American Commando Leader
- Blue Nude → Donovan
- The War of the Robots → Roger
- Covert Action → Grant
- Casanova & Co. → Marquis Coppafrata (uncredited)
- The Bloodsucker Leads the Dance → Count Richard Marnack
- Twilight of Love → Guide
- Emanuelle in Bangkok → Jimmy
- Violence for Kicks → Stefano's father
- Zorro → Fritz von Merkel
- Reflections in Black → Anselmi
- The Portrait of a Lady (TV) → Caspar Goodwood
- The Last Four Days → Jack Donati
- The Murri Affair → Riccardo Murri
- The Minor → Carlo Salvi (as Giacomo Rossi-Stuart)
- Death Smiles on a Murderer → Dr. von Ravensbrück - Walter's Father
- Mafia Junction → Marco
- The Fighting Fists of Shanghai Joe → Tricky
- The Lonely Woman → Richard Leighton
- The Off-Road Girl → Giulio Morganti
- The Godfather → G.I. (uncredited)
- Ben & Charlie → Hawkins, Pinkerton detective
- The Crimes of the Black Cat → Victor Morgan
- The Girl with the Moon Skin → Giacomo
- The Murder of Julius Caesar → Brutus
- You're Jinxed, Friend, You've Met Sacramento → Tom Murdock
- The Double → Giovanni's Brother
- The Night Evelyn Came Out of the Grave → Dr. Richard Timberlane
- Kill Django...Kill First → Johnny MaGee / Django
- Something Creeping in the Dark → Donald Forrest
- Hornets' Nest → Schwalberg
- The Last Day of the War → Pvt. Kendall
- The Night of the Assassin → Lt. Tibbitt
- The Weekend Murders → Ted Collins
- Churchill's Leopards → Major Powell
- The 5-Man Army → One of Gutierrez' Officers
- The Battle of the Damned → Major Carter
- Guess Who's Coming for a Snack? → Comandante del Lager
- Shadow of Death → Gert Muller
- Bloody Che Contra → Prado
- Zorro the Fox → Don Pedro
- Colpo sensazionale al servizio del Sifar
- Ragan → Kohler
- Snow Devils → Cmdr. Rod Jackson
- The Glass Sphinx → Ray
- An Eye for an Eye, A Tooth for a Tooth → Jeff Gordon / Agent Z-55
- Kill, Baby... Kill! → Dr. Paul Eswai
- Degueyo → Norman Sandel
- War Between the Planets → Cmdr. Rod Jackson
- The Big Blackout → Roland
- Ring Around the World → Hitman
- Knives of the Avenger → King Arald
- Duel at Sundown → Quents
- The Last Man on Earth → Ben Cortman
- Massacre At Grand Canyon → Sheriff Burt Cooley
- Badmen of the West → Sheriff Gary Smith
- Seven Slaves Against the World → Gaius
- The Revenge of the Gladiators → Fulvio
- Temple of the White Elephant → Reginald Milliner
- Kidnapped to Mystery Island → Tremal Naik
- The Shortest Day → Soldato austriaco (uncredited)
- Gunfight at Red Sands → Sheriff Lance Corbett
- Zorro and the Three Musketeers → Athos
- Arms of the Avenger → Vannozzo Duchesca
- Catherine of Russia → Count Poniatowski
- Sodom and Gomorrah → Ishmael
- The Reluctant Saint
- The Avenger → Eurialo
- Invasion 1700 → (as Giacomo Rossi-Stuart)
- Slave of Rome
- Five Branded Women
- Caltiki, the Immortal Monster → Prof. Rodriguez's Assistant
- Knight Without a Country → Ruggero
- The Night of the Great Attack
- The Silent Enemy → Rosati
- The Day the Sky Exploded → Stuart (uncredited)
- Il conte di Matera → il duca Paolo Bressi
- The House of Intrigue → Henry
- The Red Cloak
- Jeunes mariés