Priestley first started his television career doing commercials for companies such as Fletcher's Meats and then guest-starring as Bobby Conrad a.k.a.

Roberto Coronado Jr., a mobster's grandson, in the early 1987 episode "A Piece of Cake" from the fourth and final season of the television series Airwolf, and appeared in two episodes of 21 Jump Street in 1987–88, as 'Pencil' on Quantum Leap (E1S8 May 1989), then moved on to the 1989 short-lived sitcom Sister Kate, which starred Stephanie Beacham.

Priestley has also made several films, his most notable role perhaps[citation needed] being in 1997's Love and Death on Long Island, in which he played a teen idol struggling to be taken seriously as an actor.

In December 2009 along with Dougray Scott, Brian Cox, and Eddie Izzard, Priestley was featured in The Day of the Triffids, written by Patrick Harbinson, whose credits include ER and Law & Order.

[9] Priestley directed his former co-star Luke Perry in the Hallmark Channel movie Goodnight for Justice, which aired in January 2011.

[10] He guest-starred as one half of a con artist couple alongside Jennifer Finnigan in a sixth-season episode of USA's Psych[11] and also appeared in the music video "Boys" by Britney Spears.

Priestley's feature film directorial debut was the independent road trip comedy Cas & Dylan, starring Richard Dreyfuss and Tatiana Maslany.

In April 2013, Priestley appeared in Canadian Stage's production of Race, a David Mamet play, in Toronto at the Bluma Appel Theater.

[12] In 2015, Priestley starred alongside Gael García Bernal in Zoom, a comedy directed by Pedro Morelli that premiered at the Toronto International Film Festival.

[14] Jason Priestley was nominated for best lead actor in a comedy series for The Movie Network's Nova Scotia-filmed Call Me Fitz.

[22] Over the following two seasons, he drove Ford Mustangs in IMSA GTS, USRRC GT1, and Motorola Cup competition with Multimatic Motorsports.

On August 11, 2002, he was seriously injured during a practice run at the Kentucky Speedway when his Indy Pro Series car crashed into a wall at nearly 180 miles per hour.

[25] In the article, Priestley said, "I'm excited to be able to spend the month of May in Indy with my good friends and be a part of the greatest open wheel race.

Priestley was among the owners of the FAZZT Race Team, which competed in the IndyCar Series in 2010 with Canadian racer Alex Tagliani.

At the season-ending IZOD IndyCar World Championship at Las Vegas Motor Speedway, Wheldon was killed in a 15-car crash.

He eventually met the band and in his desire to help them succeed, suggested that he direct the music video for "The Old Apartment,"[28] and use his fame to persuade American stations to air it.