[1] McPherson has made guest appearances in a variety of television shows including Dynasty, Starman, Murder She Wrote, MacGyver, Matlock, and Star Trek: The Next Generation.

McPherson retired from acting in 1991, although she made a cameo appearance as a Regent in the Syfy television series Warehouse 13 in 2009.

[citation needed] Aside from that, she has stated in recent interviews that she has no plans to return to acting; however, she has appeared at a few Knight Rider events over the years.

Knight Rider has appeared in syndication in over 200 countries throughout the world, most notably in Australia, Canada, Bangladesh, Germany, and the United Kingdom.

[3][4] After McPherson retired from acting in the early 1990s, she decided to pursue conserving wildlife and the forests; her efforts have included helping in attempts to preserve the Ballona Wetlands in southern California and working with the Ballona Wetlands Trust to sue the Playa Vista community for failure to take action concerning methane.