These are qualities which cannot be replicated in some 20 overly planned and rehearsed later Bond films - but this only makes Casino Royale different - not better.
The 'live' quality of the show makes it all that much more enjoyable the spontaneity of the lines spoken and the fact that the actors are working with an actual time limit makes for a show in which the flow is constant and consistent, the interest is kept to an expected level, and the characters are more realistic. The Octoepisode of 'Climax!' was the first time James Bond appeared on-screen, and nearly half a century later Bond is still making movies.
Being a Bond fan, procuring the video of this original broadcast was neither an easy feat nor overlooked in its importance.