The Superhero Squad was a guilty pleasure. I think it only lasted 2 seasons and the first IMO was better. The voice actors were really good...how can you top George Takei for Galactus? Some of my favorite episodes where Ms Marvel accidentally got some kind of love potion IIRC and was in love with M.O.D.O.K. He was a funny henchman for Doom along with the Abomination. Another funny one was where Doom's mother was released from Hell and insisted on being called Coco Von Doom. They did sneak in some funny in jokes sometimes.
Did anyone else play the online game. It was a lot of fun too. I used to be able to team up with my nieces and nephew.