Arrested Development has such intricate humor that it takes multiple passes to absorb it all. For some jokes, the punchline for the set-up doesn’t come until some episodes—or even seasons—later. Just the first three seasons, though. Season 4 & 5 were made years later and aren’t the same.
Arrested Development, Always Sunny, and Archer for me. Always reliable when you just want half an hour of laughs. Although I do then tend to get drawn into yet another full rewatch.
I like how every single character is incredibly weird in at least one way, but their weirdness is usually a source of joy and hardly ever used as the butt of a joke.
I've definitely re-watched old Adult Swim stuff. Aqua Teen Hunger Force and Sealab 2021 in particular. (I need to include Harvey Birdman Attorney At Law in that mix)
Parks and Rec, and Letterkenny, for me. Two of my absolutely most favorite shows. Both are ridiculous in the own way, but overall uplifting and positive.
I've actually been rewatching some episodes of All In The Family airing on Pluto TV. It's remarkable (1) how little has changed and (2) how we've lost such great quality television over the past forty years.
I fall asleep to Dr. Katz all the time because it's just so calming and it always made me happy how much Dr. Katz loved and accepted his son Ben just as who he was. Most of the comedy aged pretty well, they didn't seem to have a lot of purposefully mean people on. I have a playlist that's just all the Dom Irerra episodes.
Spaced from Simon Pegg and Friends is probably the series i have rewatched the most, was just going to watch it again this week with a friend, it's been a couple years, but it always is good
Surprised not to see Generation Kill here. I'll watch it twice a year.
Along with, as mentioned by many above, Seinfeld, Firefly, Community (preferably early seasons) etc.
It has became my routine to browse on Netflix or HBO Max endlessly looking for something new to watch, but always ended up re-watching between those two.
I've rewatched Haven several times. I love everything about it, the characters, the acting, the writing, the music, and the overall vibe. It somehow manages to be tragic, terrifying, and wholesome, all at once.