There are not a lot of newer cartoon shows on that I can get into, but my son has been stuck on Ben-10 and I have to say that I am getting that way to.
Ben Tennyson finds the Omnitrix (looks like a big watch) that permanently attaches to his arm and it allows him to transform into 1 of 10 aliens with super powers. It is the sort of thing that I think any boy would have hoped to find.
He uses this new found abilities for everything between stopping bad buys and saving his cousin Gwen.
Lots of Fun especially if you have a young one into Superheroes.