During the the last few years of the 80's a revolution was brewing in American TV animation. Even if perhaps Ralph Bakshi got in the first shot with his New Adventures of Mighty Mouse in 1987, it wasn't until 1989/90 that things really caught fire - and then, boy did things happen all of a sudden. In 1990 alone we got most of the first season of 'The Simpsons', Disney released the long-running 'Tail Spin', and the Warner renaissance began with 'Tiny Toons'. Oh yeah, and 'Seinfeld' debuted within about a month of 'Simpsons', just for good measure.
TV animation in the US had been slowly putrefying since the 60's, though there were signs of improvement from about 1985 onwards. It was the turn of the decade when the dam burst, though. Not just a whole lot of new shows, but of radically DIFFERENT and GOOD new shows, which for the first time in over a generation seemed to be trying to raise the bar in terms of quality and inventiveness.
'Tiny Toons' perhaps wasn't Warner's biggest breakthrough - that arguably came soon afterwards with 'Animaniacs'. The Tiny Toons in large part were just pint-sized versions of their famous 'parents' - but they had _attitude_ and the show had a whole new concept to it. It had parody, irony, self-reflexivity, and it really was the first truly NEW thing Warner had tried in about forty years!
The juvenile characters who studied at Acme Looniversity were a kind of halfway house between traditional 80's fare like 'Muppet Babies' and the outright new characters of 'Animaniacs'. They were clearly intended to resemble their antecedents, Bugs, Daffy, etc, but they also had distinct personalities and a whole new, edgy, in your face kind of feel.
To be really blunt, 'Tiny Toons' wasn't my favourite show. Some of the characters used to annoy me quite a bit, and as a result I missed a lot of the more adult humour that was in the show at the time, so I'm taking off half a mark for personal taste - but whichever way you cut it this was a watershed series for Warner - thanks in no small spart to Steven Spielberg's involvement. It also brought together a lot of the talent under head writer Tom Ruegger which would see WB continue to prosper through the 90's with 'Animaniacs', 'Pinky and the Brain' and 'Road Rovers'.
By the time the dust had settled at the end of 1990, TV animation in the USA had been completely reinvented - and for the first time in its history, in a GOOD way. This is one of the three or four shows which started that long overdue revolution.