Shelley Berman was one of the producers of this summer replacement show. It had a laugh track and no live audience. Robert Klein, as host, did some stand-up (with the laugh track, which was kind of weird) that included some bits later released on his albums, and the rest of the show was blackout sketches.
For a while, I had at least one episode on audio tape, so I remember some bits. One funny bit they did was the "travel snob." Barbara Cason spent some time boring Laura Greene with news of her trip to Europe. Then Marty Barris cut in and said that in order to deal with a travel snob, "all you need is the ability to make up names quickly." Then the conversation resumed and turned to Greece, and Greene started saying things like, "Oh, then you must have been to Epididymis ... you know, just past the Thoracic Duct ..." and on and on, until Cason walked away crying, unable to compete further.
Another sketch featured Klein as a kid at camp, reading letters out loud that he was writing to his parents, and that got progressively worse until finally we saw MacIntyre Dixon reading a letter he was writing, saying "Bobby will be out of the in-fir-ma-rary ... in a week .. just as soon as he dries out."
Barris's catchphrase on the show was, "Ooh, am I gonna get yelled at!"