Larry Hagman again with Eden on stage in the play "Love Letters" at the College of Staten Island in New York and the United States Military Academy, West Point, New York. The appearance marked the first time the two performers had acted together since Eden appeared with Hagman in a five-episode arc on "Dallas" in 1990. In 1978, Hagman was offered two roles on two television series that were debuting. One was for "The Waverly Wonders" and the other for "Dallas", in the role of conniving elder son and businessman J.R. Ewing. When Hagman read the "Dallas" script at his wife's suggestion,
Robert Colbert entitled "City Beneath the Sea" that was shown as a television movie. In 1968, Colbert appeared in the final episode of the first season of "Hawaii Five-O". Colbert also appeared as the character Stuart Brooks on the television soap opera, "The Young and the Restless", from March 1973 to March 1983, being honored at the show's tenth anniversary. In 1981, Colbert and Robert Culp were suggested by CBS as possible replacements for Larry Hagman on "Dallas" after Hagman decided to hold out for more money; however, Hagman returned to the series. In 1987, he appeared in the film parody "Amazon