A bill, not a story
Variety and light entertainment television inherited its structure directly from the music hall and the variety theatre: a bill of different acts — comedy, music, a guest turn — assembled into a single evening's programme rather than a continuous story. Unlike a sitcom or a drama, there's no ongoing situation to track, no cast trapped together; the connective tissue is a host or a double act holding the evening together between segments.
The double act and the sketch
The Morecambe and Wise Show built its evenings around a comic double act working through sketches, musical numbers and guest appearances, closing on a set-piece routine that became as anticipated as anything earlier in the show. The format depended entirely on the chemistry between its two leads and on how guest performers were folded into sketches written specifically to use them against type. The Two Ronnies took a related approach — two performers, sketches, wordplay-driven material — but structured its half hour more tightly around recurring segments, including a spoken-word news update built almost entirely from puns, giving the show a more predictable internal shape than a looser variety bill.
Breaking the bill apart
Monty Python's Flying Circus took the sketch show and deliberately broke its expected structure, refusing to give sketches punchlines or clean endings, cutting away mid-scene, and treating the connective material between sketches as material in its own right rather than filler. Its influence on how sketch comedy could be structured, and on what a studio audience could be expected to find funny without a conventional setup and payoff, extended well past the strand of television it came from.
The stage bill format
Sunday Night at the London Palladium worked from the opposite instinct: rather than breaking the variety bill apart, it presented one, live, from an actual West End theatre, structured as a sequence of acts — singers, comedians, novelty performers — building toward a closing segment involving audience participation. It's the clearest surviving link on this list between television light entertainment and the variety theatre tradition it descended from directly, staged in front of a paying audience rather than one built purely for a broadcast.
What to watch for the difference
If you want sketch comedy built around a partnership and a big closing number, Morecambe and Wise is the clearest example of the format at its most polished. If you'd rather see sketch structure used more tightly and repeatably, The Two Ronnies is more disciplined in its shape. If you want the format taken apart and rebuilt as something closer to art than entertainment, Monty Python's Flying Circus is the one to watch. If you want to see where all of it came from, Sunday Night at the London Palladium keeps the theatre bill intact rather than translating it into sketch television at all.
Where to find it
Because variety television depended so heavily on musical rights and guest performances, complete archive runs are less consistently available than for sitcoms or drama series, and compilations of individual sketches or routines are often easier to find than a full original broadcast. A broadcaster's own archive catalogue remains the most dependable place to check what has actually survived and been reissued.