A very good set of stories and a little less 'Yankified' than some of the Gerry Anderson team outings with a more international set of characters. The animation is excellent and there are some jokes that I missed as a kid and now get as an adult. Shame about Zelda's over-the-top laughing...which gets a bit irritating after a while (still: the Mute Button comes in handy). The special features aren't upto much to be honest - little more than photo sets and character Bios on some disks. After this amount of time though on a historic serial that is released on DVD: what else to expect?