My son is 8. There are a good handful of Wii games that are interesting and challenging enough to captivate a school aged kid, but still not too violent or scary.
Kirby's Epic Yarn
Super Paper Mario (there's also a sequel to this now)
Okami (says T rated, but pretty tame. The characters drink saki at a festival, you get a major character drunk on saki to defeat him, and there's innuendo about one character having big boobs.)
Lego Star Wars, Lego Indiana Jones, etc.
Non video game toys: my son likes pretty much anything Lego, still likes Imaginext (fisher price) playsets, playmobil, remote control vehicles, etc.