Born November 19, 1955, in Ottawa, Ontario, Canada, the younger Aykroyd followed his brother into Toronto's famed Second City comedy troupe, and later into the cast of "SNL." Aykroyd was a writer and performer on the show's 1979-1980 season.
With his brother, Aykroyd co-wrote the 1991 film "Nothing but Trouble," which Dan directed and in which he starred with Demi Moore, Chevy Chase and John Candy.
He also created the Canadian series "PSI Factor: Chronicles of the Paranormal" (1996-2000), and as an actor appeared in the films "Gas" (1981), "The Funny Farm" (1983), "Doctor Detroit" (1983), "Dragnet" (1987), "Coneheads" (1993), and "Kids of the Round Table" (1995).
Like his brother, who co-wrote and starred in the "Ghostbusters" franchise, Aykroyd was a fourth-generation paranormal researcher in real life. His father Peter Sr. — who died last year at 98 — was the author of the 2009 book "A History of Ghosts: The True Story of Seances, Mediums, Ghosts, and Ghostbusters."