Here's some more.
Can't vouch for the validity of Triumph sightings in each movie in this list. Just a list i had saved from some time back.
(Excuse any duplicates that may have been posted.)

TRIUMPH MOTORCYCLES IN MOVIES

Alice's Restaurant 1969 Comedy

Blind Terror
(AKA See No Evil) 1971 Horror

Brittown 2008 Biker

Cerveau, Le
(AKA Brain, The) 1969 Action

Choppertown - The Sinners 2005 Biker

Enfants De Salaud
(AKA Bastard Brood) 1996 Comedy

Erotissimo 1968 Comedy

Freebird 2008 Biker

Garage Days 2002 Comedy

Gemini Man 1976 Sci-Fi

Genevieve 1953 Comedy

George Gently 2007 Action


Hills have Eyes 2, the 1985 Horror

In Name Of The Father 1993 Drama

Intelligence Men, The
(AKA Spylarks) 1965 Comedy

James Bond: Diamonds Are Forever
(AKA Diamonds Are Forever) 1971 Action

Kill Bill Vol I 2003 Action

Leather Boys, the 1963 Drama

Little Fauss and Big Halsy 1970 Drama

Lucky You 2007 Drama

Malaise
(AKA Room of Chains, The) 1972 Horror

Matter of Life and Death, a 1946 Fantasy

Mini Skirt Mob, the 1968 Action

Mischief 1985 Comedy

Mission: Impossible 2 2001 Action

Mission: Impossible 3 2006 Action

Night Of The Comet 1984 Comedy

Nightmare On Elm Street 4, A :The Dream Master 1988

Pray for the Wildcats 1974 Action

R.P.M. 1970 Drama

Salakuljettajan Laulu 1952 Action

Shampoo 1975 Comedy

Silencieux, Le
(AKA Escape to Nowhere) 1973 Action

Sweeper, The 1996 Action

Three Blind Mice
(AKA Une Souris Verte) 2003 Action

Tracassin Ou Les Plaisirs De La Ville, Le
(AKA Busybody, The) 1961 Comedy

World's Fastest Indian, the 2005 Drama