No, Eileen Brennan was not in the film "The Effect of Gamma Rays on Man-in-the-moon Marigolds."

The duration of The Effect of Gamma Rays on Man-in-the-Moon Marigolds - film - is 1.67 hours.

The Effect of Gamma Rays on Man-in-the-Moon Marigolds - film - was created on 1972-12-20.

The Effect of Gamma Rays on Man-in-the-Moon Marigolds - 1972 is rated/received certificates of:

Finland:K-12

Sweden:15

USA:PG

the marigolds symbolize the two sisters and the mother is the radiation