Mary Chris Wall is an actress, who is best known for the role of Ellen Talbot, the mother of Joe Talbot, on the 1995-1998 children's television show Wishbone that aired on PBS. She has appeared in such feature films as Blank Check and Ruby, in which she played Jackie Kennedy. She also has appeared in the 1990 ABC movie Challenger, the Walker, Texas Ranger television series and has more than... see more