Cowboy Bebop
I forgot I can review this here.
It's nice to have a show that is not an endless onslaught of mental health problems (looking at you Evangelion).
I mean, if you've seen it, you already know how great this show is. If you haven't give it a go, you've probably already heard of it.
Just an impeccably written show, from the characters (personality-wise and also in terms of backstory and their actions over the course of the series), to the plots (seriously this show doesn't miss) and the music.
There's little to criticise here, apart from it ending so soon (seriously can we get like some more movies please). Just a great series.