That line I previously wrote above doesn't apply to Season 6 of the series, which I've just started watching. I previously posted a couple instances from previous seasons where they've inserted some topical reference that applied to the time the episode had been rerun. The fact that in Season 6 they had announcements for "next week's guests" is probably the reason why several of the Season 6 episodes I've viewed so far have coming attractions for the next week's guests that do not appear in the next episode. Rowan & Martin's Laugh-In first aired each episode and, if any of said episodes were rerun, I guess they took the original and altered it if they wanted to insert something and then that rerun tape or print became the defacto original episode. I only know of two or three times that was the case in the first five seasons, but because they announced the guests for the following week in Season 6, I am guessing the reason some of the Season 6 episodes have the wrong guest stars shown for the following episode is because they had those segments re-edited when they re-ran some in the spring. When I'm finished watching Season 6, and I'm not in a hurry, I'll try to find out if that's exactly the case. In the meantime, the past several months I've really been enjoying and recommend this entire series release!