This show always ran hot or cold for me.  Either they were hilarious or truly sucked.  Yakko, Wakko, and Dot were good, but I had to be in the right mood to watch them.   Slappy Squirrel was great, and of course, Pinky and the Brain ruled (although, unfortunately, not really).  The Goodfeathers, Rita and and Runt, and Buttons and Mindy all sucked.  

I'm not really pulling a lot of good stuff for Animaniacs, but it's been that kind of day.  I did find a bunch of old Animaniacs fanficts that are kind of funny.