Last night I found this compilation of the various introductions to each program (except for the "Those Nick at Nite Promos!" special, it's possible there's more missing but I don't know) that aired on Nick at Nite's 10th anniversary marathon.
This is great, seeing various info on the history of Nick at Nite's airing of some shows, plus a list of when Nick at Nite ran the shows (in addition to the episode numbers and titles).
It's interesting seeing what, at the time, had been Nick at Nite's longest-running show, not to mention the part that acknowledges that Bewitched was the only show to leave the channel and come back (since then there have been other shows to come back to Nick at Nite, like The Monkees). In fact I was surprised to see that Lassie was there, and had ended its Nick at Nite run before I got the channel, as it was airing on Nickelodeon at the time.
Additionally, while I did watch the marathon when it aired (well, most of the marathon, there were shows that I missed, I regret not taping the marathon), there are a lot of shows that I don't remember knowing were on the channel before 1995. I don't remember knowing that The Smother's Brothers or Fernwood 2-Nite ever aired on the channel (and Fernwood, according to the intro, lasted there until 1993, a year after I got cable... though I feel like at first I didn't watch everything on Nick at Nite, despite watching practically everything on the regular Nickelodeon line-up). Some shows that aired during this marathon I don't even remember knowing about at all (and this marathon was the first that I knew of such shows as Welcome Back, Kotter - despite the fact that it had already aired on Nick at Nite, Laugh In, The Patty Duke Show, and SCTV - the latter of which I forgot the title of for a few years, then heard about the title again and eventually wondered if it was that show.... after watching SCTV in the marathon, all I could remember about it for years was the Gerry Todd Show).
While watching this and seeing a few promos in a row for variety shows, I was expecting that night to be the night that The Best of Saturday Night Live was shown, thinking maybe it was a variety night. Then was surprised to see it aired another day (in addition to being surprised Fernwood 2-Nite was on the channel). In fact watching this marathon, some of these seemed to be on days that I thought were different. I was thinking that SNL and Patty Duke aired on the last day of the network (though I did remember Kotter and The Munsters airing that day).
Also interesting that the last day of the marathon was for shows that were currently on the channel. I knew that this marathon was the first time The Munsters aired on Nick at Nite, but I am surprised to see that they decided to premiere it on the channel during its anniversary marathon. I don't remember seeing commercials for the show until after the week was over. This marathon teases that there would be a new-to-Nick at Nite show, I guess they were trying to surprise the audience (though I saw it listed in the TV listing before it was on, but I also assumed that was a previously-on-Nick at Nite program, anybody reading the TV listings or TV Guide without knowledge on the channels whole history might have made the same mistake). When watching that last promo, I was reminded of how odd it was (to me back then) that the intro said that The Munsters aired on Nick at Nite "in just a moment".
I wonder how hard it was for Nick at Nite to get the rights to all the shows they aired for just this week. There are some shows that didn't air, like all of Nick at Nite's original programming (I know that their "At the Movies" parody series didn't air because of issues regarding residuals), and I remember knowing that Green Acres aired on the channel but wasn't part of the marathon. I'm surprised to see (unless the uploader just didn't tape it) that The Lucy Show wasn't included. And it would have been cool if they would have aired "Looney Tunes on Nick at Nite" (which shouldn't have been hard considering Nickelodeons till aired Looney Tunes at the time).
Regarding the episode numbers: I'm surprised that the SCTV episode was listed as episode 10, since it's clearly a half-hour of the 90-minute Moral Majority episode, which is the sixth episode of the fourth season. I know that the 90-minute and 45-minute episodes were cut into multiple parts (if not completely cut to 30 minutes) so they could air alongside the syndicated versions, but this half-hour should have had a higher episode number than 10.
Also of note: Long ago, I read a book called Cult TV, which included a small section on Laugh-in in the "Lost Cults" chapter, saying that when reruns aired in the 1980s, "they bombed". I thought it was referring to Nick at Nite reruns, but I think that book came out in 1985 or 1986, and it says that it began on Nick at Nite in 1987 and lasted a few years, so I guess Nick at Nite ran the show after reruns bombed in syndication.