Hart was a pioneer in the Canadian territory of professional wrestling. Competing for the early days of World Championship Wrestling (WCW), many of his children would end up becoming superstars and wrestlers in their own right, such as Bret, Owen, Bruce, and Keith.
Hart made several appearances on WWE television in the 1990's and early 2000's. The majority of those appearances involved his sons, Bret and Owen Hart. A recurring staple of these appearances in the 1990's was that Stu and his wife Helen would be verbally attacked by several of the commentators, mostly by Bobby Heenan and Jerry Lawler, who was in a long-running feud with Bret during this point in time. At the 1993 pay-per-view event Survivor Series, Stu had a planned physical interaction outside of the ring with Shawn Michaels. Michaels was involved in a match with Stu's sons, Bruce, Keith, Bret and Owen Hart. Michaels played the part of the antagonist, and when failing to succeed in winning the match, Michaels character then attacked Stu who responded by pretend to knock him out with an elbow smash.
Hart also appeared in WCW at the Slamboree 1993: A Legends' Reunion event.
Hart passed away on October 16, 2003.
On March 27, 2010, Hart was posthumously inducted into the WWE Hall of Fame.