If you like baseball, MLB Power Pros recently came out for the Wii. It's from Konami's super-popular-in-japan Power Pro baseball series. Despite its kiddy look it's apparently an incredibly deep game. If you're worried about the motion control stuff, this game never uses it in the main game. It's all buttons.

I think this is way closer to 'realistic' MLB games rather than Mario's traditional mutation of sports games (as much as I love 'em).