text: Episode 6: "New Beginnings". Guest starring Larry Hagman as J.R. Ewing, Patrick Duffy as Bobby Ewing and Eric Farlow as Christopher Ewing. This episode of Knots Landing was a direct sequel to the Dallas episode "Jock's Will", which aired on the same evening.
  In addition to the above, Gary and Valene Ewing appeared in the following episodes of Dallas, as listed below.
  Season 2 (1978–79 season)
  Episode 1: "Reunion, Part I". Featuring David Ackroyd as Gary Ewing and Joan Van Ark as Valene Clements
  Episode 2: "Reunion, Part II". Featuring David Ackroyd as Gary Ewing and Joan Van Ark as Valene Clements
  Season 3 (1979–80 season)
  Episode 4: "Secrets". Featuring Joan Van Ark as Valene Clements
  Episode 14: "Return Engagements". Featuring Ted Shackelford as Gary Ewing and Joan Van Ark as Valene Ewing
  Season 4 (1980–81 season)
  Episode 1: "No More Mister Nice Guy, Part I". Featuring Ted Shackelford as Gary Ewing and Joan Van Ark as Valene Ewing
  Episode 2: "No More Mister Nice Guy, Part II". Featuring Ted Shackelford as Gary Ewing
  Episode 12: "End of the Road, Part II". Featuring Ted Shackelford as Gary Ewing and Joan Van Ark as Valene Ewing
  Season 5 (1981–82 season)
  Episode 8: "The Split". Featuring Ted Shackelford as Gary Ewing and Joan Van Ark as Valene Ewing
  Episode 9: "Five Dollars a Barrel". Featuring Ted Shackelford as Gary Ewing