I remember when Cartoon Network added them to their lineup in the summer of 1998, they made a tremendous deal out of it, they had countless promos of them invading other cartoons, not to mention sometimes even during regular programming, they'd have them run across the bottom of the screen at random.
I think when it comes to cartoons of the 90s, ANIMANIACS is probably one of the best and well-known representatives of that decade of animation, it was clear, clever, sharp, and hilarious, and the various different segments on rotation kept it fresh and interesting... they don't make cartoons like that anymore.