Reportedly, Eiji Tsuburaya considered this series his masterwork because the focus was on the people rather than on the vehicles and special effects (the show never had any monsters or aliens, as his more famous shows Ultra Q, Ultraman and Ultra Seven did.) This focus on the people was similar to the works of Gerry Anderson, of which Eiji was a big fan.
Jack Kerouac | Jack Nicholson | Jack Nicklaus | Jack the Ripper | Jack London | Jack Kemp | Jack Kirby | Jack Lemmon | Jack Black | Jack Abramoff | Jack Dempsey | Jack Benny | Jack White | Wolfman Jack | Union Jack | Jack White (musician) | Jack and the Beanstalk | Jack Johnson | Jack Charlton | Jack Palance | Jack Daniel's | Jack | Jack Paar | Jack Layton | Mighty Morphin Power Rangers | Jack Straw | Jack Vance | Jack Bruce | Mighty Mouse | Jack Warden |