My best advice to you is don't expect to be finding stuff constantly if you're coming into it for "lost media" or whatever. I focus on daytime TV stuff in the United States from before the 1980s which means I don't have as many "hits" as most people do in regards to finding stuff that is lost (my last big find, which was inarguably my biggest find, was in January of 2023, and even then it was only a five minute clip, but it's five minutes of color videotape footage of a game show called Concentration which was considered a holy grail-esque find considering the tapes have long been destroyed and all that's left outside of stuff that might exist in private collections or at UCLA's archive that we don't know about are black and white kinescopes and 16mm films. And then before then was something from 2021. And then before then? I think it was like 2012) but the things I have discovered and shared online have been things that meant a lot to me and mean a lot to the world of television history which makes me happy.

I like The Beach Boys!! I know they've taken a reputation hit in recent times in ways that are akin to why people got kind of tired of The Beatles for awhile there but I am always down to listen to them and I honestly think some of their more experimental stuff was so way ahead of its time that I'm glad people are being nicer about them than they used to be again. My favorite song of theirs is "Help Me, Rhonda", which gets in my head more than I'd like to admit. I always associate that song with college because the very tiny (there was room for like two tables and two chairs so they could also have room for one long table that had bagels wrapped in cellophane in a basket) cafeteria in the building I spent most of my time in used to play WCBS-FM and every time I'd go there for lunch the music would cycle through enough that there was a good 70-80% chance I'd get to hear that song in the rotation. That little cafeteria was a branch of the really big one our campus had but considering most of my classes were in this building I really appreciated how much more quiet and cozy it was.

https://www.youtube.com/watch?v=j1THDLgL_bs

I've got some that come to mind:

• George & Leo (1997-98 Bob Newhart and Judd Hirsch sitcom because I would watch those two sit in a white room together and just stare at each other)
• Coming of Age (1988-89 sitcom where Paul Dooley plays a freshly retired man who moves into a retirement community kicking and screaming. Two of his neighbors are the always wonderful Alan Young and Glynis Johns, and Bob & Ray memorably play two other annoying neighbors in one episode in their last time appearing together as a duo)
• Mary (1985-86 Mary Tyler Moore ensemble sitcom that's pretty similar in style to her legendary 70s sitcom but she's a newspaper columnist. John Astin and Katey Sagal play supporting roles!! Katey is especially wonderful on this, she plays a cigarette smoking cynical advice columnist and the best episode of the entire show ("Same Old Song") is all about her character and really shows off her acting chops.)
• Carter Country (1977-79 sitcom that you could say was a rural and much less clever version of Barney Miller but it's got a lot of charm with Kene Holliday and Victor French being especially likable)
• Bob (Bob Newhart sitcom from 1992-93 that was as charmingly fun as anything else he's ever done and deserved a longer run, though I think the format change did way more damage than they were ever anticipating, and that's even with them adding Betty White to the cast. They even did a real life shortlived Marvel comic about the character he created on the show!!)

There's a ton of others (I recently got to see an episode of Calucci's Department for the first time and couldn't believe how surprisingly wholesome the plus-sized romance storyline was in the episode) but I think I will stop there.

Of "underrated" sitcoms that WEREN'T shortlived that I feel like people tend to forget about now-a-days, I really love Amen. Secretly I might even like it more than The Jeffersons if we're talking Sherman Hemsley sitcoms.