I am too young to have seen this on tv, but was lucky enough to find a vhs of this when i was younger, i watched it repeatedly, until recently i saw the dvd's had been released, i bought them all.
There is not one flat episode in there...all the characters are great, all hitting the right note (unlike the modern bbc incarnation) marion is perfect, as are tuck and little john..but special praise for the sheriff.
It is silly, and old but still not outdated. After a few seasons it became a fascination to note how many times the same set peice was used to represent a different part of the country (the same castle apparently being built several times over). So too did the hammed up death scenes of a few of the sherriffs men, taking several tumbles before finally passing. These are not critiscms they just add to the charm and fun of this classic tv show.
This show was so great that i have bought many of the related series, "The Adventures of William Tell" and "The Adventures of Sir Lancelot" being among my favourites.