He has performed in over 60 plays including Solzhenitsyn, For Those in the Peril on the Sea, Sandinista, Nineteen Eighty-Four, La Storia Calvino, A Flea in Her Ear and The Lesson.
He received a Montreal Gazette Critic’s Award in 1979 for his role in Nineteen Eighty-Four, a Dora Mavor Moore Award for Artistic Excellence – Collective – in 1985 for La Storia Calvino, garnered a Dora Award nomination in 2001 for his role in A Flea in Her Ear, and a Dora Award in 2002 for Outstanding Performance for his role in The Lesson. In 2007 he received a Best Actor Thespis Award for Two Letters.
His movie roles include Caffè Italia, Concrete Angels, Cruising Bar, La Sarrasine, An Imaginary Tale, Mr. Aiello (La Déroute), My Father's Angel, Corbo and Kiss Me Like a Lover (Embrasse-moi comme tu m'aimes), and his TV credits include Rossini's Ghost, Galileo: On the Shoulders of Giants, Bonanno: A Godfather's Story, Almost America, Il Duce Canadese and Indian Summer: The Oka Crisis.
A five-time Genie Award nominee, he has won twice for Best Actor for roles in La Sarrasine (1992) and My Father’s Angel (2001), for which he had also received a Best Actor award at the Sonoma Wine and Country Film Festival in 2000. He received the Guy L’Écuyer Award for his role in La Déroute in 1998. In 2010, the year marking the 30th Annual Genie Awards, he made the Academy’s 30th Anniversary Top 10 list in the Lead Actor category in Canadian cinema – a ranking based on the number of wins and nominations over the 30-year period.
In television, he received a Gemini Award nomination in 2006 for his role in Il Duce Canadese and a Best Actor Award at the Geneva International Film Festival, Tous Écrans/All Screens, in 1999, for his role in Ken Finkleman's Foolish Heart.
In 2015, he portrayed Little Anthony in the vampire film Sicilian Vampire.
Nardi is co-author with Vincent Ierfino of the play La Storia dell'Emigrante. Written in Calabrian, English and French, the play was the first in Canada (on record) written by an Italian-Canadian and addressing an Italian-Canadian reality. In 1982 La Storia dell'Emigrante received the first James Buller Award for best original Canadian play at the Ontario Multicultural Theatre Festival.
A Modo Suo: A Fable, written in Calabrian in 1990, received a Dora Award nomination for Best Play. An English translation was published in its entirety in the Canadian Theatre Review in 2000.
He collaborated on the screenplays for La Sarrasine and La Déroute.
Two Letters (2006), two theatrical monologues based on two actual letters sent to a film/television producer and two theatre critics, received a 2007 Dora Award Nomination for Outstanding New Play. "...And Counting!" - a postmortem of "Two Letters" and journey into the state of culture and funding in Canada was presented in 2008 in Toronto and Montreal, at Factory Theatre and McGill University, respectively and in 2010 at the Festival TransAmeriques in Montreal.
In 2008 he was nominated for a Siminovitch Prize in Theatre (long list) for playwriting.
"Two Letters...And Counting!" was published by Guernica Editions, spring 2013.
"Letter One", "Letter Two", and "...And Counting!" were filmed in front of a live audience and released respectively in 2011, 2013 and 2014. Executive Producer: Constitutional lawyer Rocco Galati, and producer: Paul Tana. Letter One was screened at Les Rendez-vous du cinéma québécois in Montreal in 2011, at Hot Docs in Toronto in 2012 and the Italian Contemporary Film Festival at TIFF in 2012. "Letter Two" was screened at the Italian Contemporary Film Festival at TIFF in 2013. "...And Counting!" was screened at the 2014 Italian Contemporary Italian Film Festival at TIFF.
In 1992 he received the 125th Anniversary of the Confederation of Canada Medal, awarded to Canadians for significant contribution to their fellow citizens, to their community, or to Canada.