Dan Savage is credited twice on screen, once as "Advice Columnist," and a second time as "author, Savage Love."
Marty Klein is credited twice on screen, once as "Therapist," and a second time as "therapist, sexed.org." He refers to himself as both a therapist, and as a sexologist.
William Stayton is first introduced as one of the couples being interviewed, without on screen credit or his name being verbalized, but later, he is shown without his wife, dressed in suit and tie, and credited as "minister & sexologist."
Pepper Schwartz is credited twice on screen, once as "Sociologist," and the second time as "author, American Couples."
Clips from several other films (in addition to what is listed in 'movie connections') are edited into this film, to edify the topics being discussed, however, there are no film titles referenced on screen as a caption while the clips are playing, or during the ending film credits. Since most of these clips are from VERY old films, it is likely that the copyrights have lapsed, and the films have passed into the public domain. Exception: Motel Confidential (1969) has no on screen caption or end titles credit either, but the name of that film is heard while the (from the voice over announcer on the original trailer) clip is played.