I'm missing a ton of shows that I really should have watched/be watching now, but most of them have already been mentioned.
Not sure if this is considered critically acclaimed or not, but I just started watching Farscape (finished Season 1) because I had always heard I should watch it, and I'm glad I did. Even the fucking muppet (Rigel XVI) is a pretty good character. And while I always liked Claudia Black's voice, watching her in person is possibly leading to me needing to aychamo her (the stalking part, not the flashing my butthole part). She's not what I'd consider super hot, but Goddamn I want to marry her. And then probably divorce her, but still!