As Stig O'Hara, "the quiet Rutle," Ricky Fataar does not have one spoken line in the entire film.
As a member of the Bonzo Dog Band, Neil Innes actually had a cameo role in the Beatles' Magical Mystery Tour (1967) (TV).
According to the DVD director commentary track, the glider that flies past the policemen on the wall during the "Magical Mystery Tour" Parody was not anticipated.
The Rutles originally began as a sketch on Eric Idle's UK show "Rutland Weekend Television" (1975), showing the band (with Idle as Harrison) playing a slower version of "I Must Be in Love" in their movie "A Hard Day's Rut." Lorne Michaels aired the clip on "Saturday Night Live" (1975) when Idle hosted, which led to a deal for the TV special.
Innes, Fataar and Halsey regrouped in 1996 to record "Archaeology", their satirical response to the Beatles' "Anthology". It consisted of tunes not used in the movie, rearranged Neil Innes solo songs and one song penned as a spoof of "Free as a Bird". Idle didn't take part; Dirk McQuickly, the album's press materials explained, had quit the music business to become a comedian.
Ollie Halsall, briefly seen as Leppo, the 5th Rutle, provided the singing voice for Dirk McQuickley (Eric Idle).
One of the gold discs on the wall of Archie Macaw's office is Red Rose Speedway (1973) by Paul McCartney's Wings.
Eric Idle mentions in his "memoir" available on the DVD what the actual Beatles thought of the film. According to him, George Harrison was very supportive and encouraged him, Paul McCartney was disapproving at first but relented when he found that Idle grew up near Liverpool (though his wife Linda always loved it), Ringo Starr said that he enjoyed it "after 1968", and John Lennon (along with Yoko Ono) adored it.