Ant-Man & The Wasp Vs. The Legion of Doom

I had seen superhero cartoons before, but nothing prepared me for Challenge of the Super-Friends.  Here not only did the Super-Friends expand their roster, but they also battled The Legion of Doom, an army of DC supervillains, in every hour long episode!  It may seem quaint now, but for 9 year old me it was like a summer blockbuster every Saturday.