I think it's safe to say that anyone of my age (was born in late 80s and am now nearly 20, FYI) would agree that Thames TV were behind some of the finest children's TV this country had to offer at the time: Button Moon, Wind in the Willows, Count Duckula, and of course, Rainbow. Between 1972 and 1992 (when Thames TV was sadly nationalized), it provided 30 years of memories, mirth and many other things besides.
This DVD, released in 2002, commemorates those 30 years rather neatly, as 6 classic episodes and the bonus of the show's very first episode are brought together on here. It's amazing to see how much the show progressed from "Shapes" (which is the title of the first episode), into what most of us know it as - the daily antics of Geoffrey, Zippy, George and Bungle in the Rainbow house, with the odd song and dance from Rod, Jane and Freddy (whose own spin off show was also a favourite of mine as a youngster).
Best episodes on here are "The Birthday Cake" (which I distinctly remember my mum/dad taping off the TV for me and me then losing, to my dismay, at a later stage), and "George's Secret Place". The option of audio commentary on the episodes from Zippy and George also makes this DVD a must have to pass onto generations to come. Long may Rainbow's legacy live!