Scott Bakula, as Quintin Mills, 1983
Marcia Cross, as Tanya, Cass's date, March 21 and 24, 1986
Kristin Davis, as Page, November 29-30, 1990
Dan Futterman, as Alan Lottin, 5 episodes, 1992
Gil Gerard, as Fred Warner, January 14, 1972. He was seen at the top of the scene exiting the law office. His one line: "Thank you, Mr. Randolph, Mr. Curtin."
Thomas Gibson, as Sam Fowler, temporary replacement, May 21 - June 19, 1990
Kelsey Grammer, as (1) a head paramedic, 1982, and (2) Dr. Canard, recurring, 1984
Michael Gross, as Randy, several episodes, July 1981
Melissa Joan Hart, as a roller-bladder, April 22, 1986
Eriq LaSalle, as Julie Ann's date, January 15, 1987
Matt Lauer, as a gallery patron, one episode, 1982
Lindsay Lohan, as Alli Fowler, 19 episodes, 1996-1997
Wendie Malick, as Cecile's henchwoman, May 6, 1986
William H. Macy, as Frank Fish, spring 1982
Marla Maples, as Jason's date, one episode, 1988
John C. McGinley, as Ned, 1985-1986
Chris Noth, as (1) Jimmy, 1985, and (2) a dean, 1988
Ed O'Neill, as Lenny, 1981
Joe Pantoliano, a process server, 1977
Luke Perry, as Kenny, Josie's manager and one of the two Frame borders, recurring, 1988-1989
Brad Pitt, as Chris, a high school student in a location shot with Michael and John, two episodes, May 1987
Ving Rhames, as Czaja Carnek, recurring, 1986
Janine Turner, as Patricia Kirkland, an old girlfriend of Scott's, recurring, 1986-1987
Billy Dee Williams, as the Assistant D.A., recurring, 1967
Henry Winkler, as an intern, June 20, 1972