[9] He also promoted several major off-Broadway hits including Paul Zindel's Pulitzer Prize-winning The Effect of Gamma Rays on Man-in-the-Moon Marigolds, the Elaine May-Terrence McNally double-bill "Adaptation/Next" with James Coco, Harold Pinter's The Tea Party and The Basement, the long-running rock musical Your Own Thing, Andre Gregory's experimental adaptation of Alice in Wonderland, and Tom Stoppard's The Real Inspector Hound.
[10] Eichler also represented several noteworthy "flops" during this period including Shelley Winters' only attempt at playwrighting, One Night Stands of a Noisy Passenger with Robert De Niro, Sally Kirkland and Diane Ladd; Tina Howe's The Nest with Jill Clayburgh; Leland Hayward's last production The Mother Lover with Eileen Heckart; The Dozens with Morgan Freeman, Al Freeman Jr., and Paula Kelly (actress); and Larry Kramer's Four Friends with Brad Davis.
[11] In 1970, he began a long association with playwright Tom Eyen,[12] starting with The Dirtiest Show in Town and continuing with the prison comedy Women Behind Bars (which Eichler also co-produced),[13] The Neon Woman starring Divine, Why Hanna's Skirt Won't Stay Down with Helen Hanft,[14] The White Whore and the Bit Player, and the Tony Award-winning musical Dreamgirls.
In 1974, he became co-producer with Geraldine Fitzgerald of her one-woman musical show Streetsongs, which had three separate extended theatrical runs over the next several years both on and off-Broadway, a TV version on PBS and an original cast record album.
He helped steer the course of an unusual 1975 rock opera entitled The Lieutenant, based on the My Lai Massacre, which began as a small workshop production at the Queens Theatre in the Park, before traveling to Broadway.
[25] In 1986, he produced all-star benefit shows at the Vine Street Bar and Grill that raised money to obtain a star on the Hollywood Walk of Fame for Billie Holiday.
[47] He helped Knots Landing co-star Larry Riley launch a singing career in 1988, and produced the actor's tribute-show to Louis Jordan, Let the Good Times Roll.
He created and produced the show Voices—Hollywood's Secret Singing Stars,[55] featuring four vocalists (Annette Warren, India Adams, Betty Wand and Jo Ann Greer).