Definitely considered a classic, Taxi is a sitcom following lead Alex Reiger (Judd Hirsch), a taxi driver in New York, and a regular crew of other drivers of the Sunshine Cab Company. Notably Danny Devito stars as the mean spirited taxi dispatcher (funnily this role is likely what made him a clear get for the much later Always Sunny), Tony Danza got his big start as the boxer Tony Banta (supposedly his name was changed to match the actor due to concerns he would forget to respond to his fake name), Christopher Lloyd in later seasons as the Reverend Jim, and of course my favourite Andy Kaufman as the enigma foreigner Latka Gravas. Andy Kaufman is hilarious any time he's on screen, I'd almost recommend the show just for more of him, his life and psyche are so strange and compelling (would recommend checking out Man on the Moon with Jim Carrey for more), he's a rabbit hole of mystery certainly. But outside of the strange comedian the show is a fairly vanilla (at least to modern standards) take on a working class sitcom. Of course "working class sitcoms" were something a bit new at the time, the lead reminds me much of Al Waxman from King of Kensington (premiering on CBC just a few years earlier), in his ever-morally just personality, always trying to do the right thing no matter the circumstances he comes up against. A pretty classic trope for a lead, it works decently well for what it is. The show often attempts to be progressive in its narratives, which ironically more than not ends up being where it falls the most tone-deaf, especially to modern ears, but the series as a whole is quite fun and self-aware. If you haven't seen it I'd certainly recommend at least checking out a few episodes.
Review of Taxi
