I've recently started Transformers and it seems good. (And I never watched the TV show/had the toys. It's just fun to blow up tanks.)
The idea is you pick whether you want to be an Autobot or Decepticon (By actually picking a game a la Pokemon) You follow their storyline and do simple missions like "Distract the enemy! Blow up 5 airplanes in helicopter mode" and stuff.
It even has "online" play where you download missions and try and beat people with the other game. And, like the VVisions Tony Hawk games, the VVisions Transformers game has a website and forum too.