Young Breasts AKA Blue Breasts is a 1958 Japanese juvenile delinquent film directed by Seijun Suzuki for the Nikkatsu Corporation. Akira Kobayashi stars as a young hoodlum who tries to go straight after falling in love with his social worker.

日活お得意の西部劇風無国籍アクション。主演はダンプガイ・二谷英明。監督は日活の鬼っ子・鈴木清順。散弾銃を持った流れ者が天竜川の大森林地帯で3悪人と対決し、恋人の仇を討つ。編中、二谷が小林旭ばりにギター片手に唄う、いささか珍妙なシーンがある。アクションの快感と西部劇パロディ調のおかしさが奇妙に混合した一編。

Mighty Jack was a tokusatsu SF/espionage/action TV series. Created by Japanese effects wizard Eiji Tsuburaya, the show was produced by Tsuburaya Productions and was broadcast on Fuji TV from April 6, 1968 to June 29, 1968, with a total of 13 one-hour episodes. The music for the episodes was done by Isao Tomita and Kunio Miyauchi.

Reportedly, Eiji Tsuburaya considered this series his masterwork because the focus was on the people rather than on the vehicles and special effects This focus on the people was similar to the works of Gerry Anderson, of which Eiji was a big fan. The Mighty Jack mecha/HQ featured in this series also has some similarities to Eiji's previous TV masterpiece, Ultra Seven.

Even for the original series of 13 one hour-long episodes, the ratings were low. The follow-up series, Fight! Mighty Jack, fared better in the ratings, perhaps because of its inclusion of monsters and aliens rather than purely human evil-doers like Q.