Mrs. F and I saw the "Corman's World" DVD with some great extras, including a montage of personal messages to Roger from the star-studded list of documentary participants.
Was it good? We loved it.
Would it be a good fit for the Marathon? In a word no.
Most of the focus was on the biker, action and exploitation pictures of the late 60's and 70's. Jack Nicholson, Pam Grier, Ron Howard and Bruce Dern were so engaging that little attention was paid to Dick Miller and none to Robert Towne. With the exception of "Death Race 2000", the Corman films that have played the Marathon were essentially ignored.