Okay, it is black-and-white, but that is what we had in those days. We considered ourselves lucky to have pictures! We were happier then, despite being poor. BECAUSE we were poor! Not long before The 1948 show, this zany British humour could only be found on the radio, in ISIRTA (I'm Sorry, I'll Read That Again) or the Goon Show. (Thinks! Did not mention Telegoons! Thinks again... should not think aloud). Afterwards came Monty Python, admittedly zanier and more polished, but At Last The 1948 Show has some advantages for being early in the learning process of translating weirdness to television: it has a warmer touch to it, partly because the actors are more candid, and partly because they are not trying to out-do what Spike Milligan nor Do Not Adjust Your Sets is up to (in fact there is friendly interaction with DNAYS).
Some of the skits here were re-workings of material from radio or live performances, or would be repeated later, elsewhere. Yet these were often the best, the definitive versions. The acting isn't amateurish, it is more like a live performance; they are obviously comfortable with ad-libbing and everyone works well together. By not taking themselves too seriously, even the "lovely" female link between segments, they break molds and the viewer cannot help feeling this is something revolutionary, even today.
But mostly this series is great because it has plenty of extremely funny moments in it, funnier than Monty Python, in my opinion, and done with great style. Pure, clean, unadulterated fun.