The Rickenbacker 4001 is an electric bass that was manufactured by Rickenbacker as a two-pickup "deluxe" version of their first production bass, the single-pickup model 4000. This design, created by Roger Rossmeisl, was manufactured between 1961 and 1981, when it was replaced by an updated version dubbed the Rickenbacker 4003. Variant models of the 4001 include the 4001S, 4001LH, 1999, 4001V63 (reissue), 4001CS and the 4001C64 and 4001C64S: the C Series is a recreation of Paul McCartney's left-handed 4001S with a reversed headstock. There are also Al Cisneros and Lemmy Kilmister signature versions of the instrument.

FLCL is an original video animation (OVA) anime series created and directed by Kazuya Tsurumaki, written by Yōji Enokido, and produced by the FLCL Production Committee, which consisted of Gainax, Production I.G, and King Records. FLCL is a story following Naota Nandaba, a twelve-year-old boy whose suburban life is disturbed by the arrival of the mysterious Haruko Haruhara. The six-episode series was released in Japan from April 2000 to March 2001 alongside a manga and novel adaptation.