The entire plot is adapted from this earlier movie.
J.R. mentions The Today Show.
Seen on movie marquee.
J.R. and the girl on the roof and the mentioning of pigeons strongly resembles Terry and Edie in "On the Waterfront."
John Wayne's picture is in a magazine the girl is reading and J.R. tries to find out if she has seen the movie.
Still frames and poster seen outside theater.
Jeffrey Hunter's role as Christ is discussed.
J.R. mentions this movie.
The girl asks J.R. if the person who played Christ that he's thinking of was Swedish.
Banner outside movie theater announces tickets are available for this movie.
In his review of "Taxi Driver" (1976), Gene Siskel lists other Martin Scorsese movies, including this one.
the opening montage to 'i'm a believer' in bullet in the head crosscutting that dancing and fighting was directly inspired by the opening of this film.
At one point Mr. Blonde says he bets Mr. White (Harvey Keitel) is a Lee Marvin fan; in 'Who's That Knocking at My Door', Harvey Keitel's character is a self-professed Lee Marvin fan.
Gene Siskel mentions the Madonna-whore theme that runs through Martin Scorsese's movies, beginning with this one.
Alluded to when Roger mentions he saw Martin Scorsese's first film.
Title is referenced
Clips are shown
clips are shown during Kartina Richardson's segment
clips are shown during Roger's segment on Martin Scorsese
The trailer for "Whose That Knocking on My Door" is featured.