Along with the 1948 Show (which featured Pythons-to-be John Cleese and Graham Chapman), DNAYS is revered and sought-after as a missing piece of the puzzle of pre-Python lunacy. Bringing together the other four Pythons (Michael Palin, Terry Jones, Eric Idle - all looking impossibly young - and cartoonist Terry Gilliam) it was an anarchic and silly series, aimed (supposedly) at kids but with much to offer everyone else.
Alongside Palin & co. there was David Jason (now a huge favourite of British TV with Only Fools and Horses, A Touch of Frost, and much more), Denise Coffey (now whatever happened to her?) and the musical antics of the wonderful Bonzo Dog (Doo Dah) Band. Basically a dozen or so twenty-something guys (and a girl) letting their hair down and having a laugh would sum up DNAYS perfectly.
Although the series has rarely been re-run - I think two episodes have been on TV in the last twenty years as part of retrospective telly nights, including the Christmas special Do Not Adjust Your Stocking - the good news is that over half the episodes as filmed have survived the ravages of time and the mass wiping of tapes that went on in the 1960s and 1970s. Occasionally liberated from archives for the odd screening, the series holds up well and is extremely off-the-wall and funny. It would be wonderful to see it out on DVD.