I'd recommend Twilight Princess. I liked it and the graphics are lovely.
You might want to try the Harry Potter game(s) on the Wii? (not sure if they've released more than one on it)
How about the Mario games?
Also the Lego games, like Lego Indiana Jones, Lego Star Wars, Lego Batman. They're cutesy, lighthearted fun.
All I can think of off the top of my head.