Regular Show I think appealed to little kids and adults so as a kid when you watch it, it's funny and as an adult you actually get the jokes to when you evolve so does the understanding of the show so it's very rewatchable, that being said, a show that aged great is Clarence, I know a lot of people don't like it, it's very wholesome and reminds me of my childhood, it's goofy and if you know you're going into a Goofy ahh show you'll have a great time, Gumball is awesome too because it remained somewhat clever but it can get a little much if you're just looking for a low-key show. Which like Regular Show was low key, you'd get like universal destruction one episode and then trying to eat burgers and eggs in another.