Digital-Pride: Sorry for not getting back to you faster. Yeah, there are some jagged edges in Ridge Racer - overall I wouldn't call it visually stunning, but it's not bad either. Broadly it's just very fun and looks fabulous in 3D (though I'm prone to flailing around a bit and losing the effect). If you want really impressive graphical fidelity, Super Street Fighter IV looks just as good if not better than I'd expect a Wii port of the game to look. On such a small screen it actually gets very close to the PS3/360 versions, the only caveat being the static backgrounds. It also plays very well with the touchscreen comands and the thumbslider.
As for Nintendo making quirky decisions: where have you been? Nintendo's been making odd decisions for years now. And if I might be so bold as to say so, the industry's been all the better for it. The DS essentially introduced the world to touchscreens in a big way years before the iPhone, and the Wii popularised the idea of accelerometers and their use in common electronics (iPhone again), and who knows what will happen with autosteroscopic 3D a few years down the line? I wouldn't be surprised if Apple decided to pick up on that, too.
In the gaming world, without any other kind of innovation we'd just have behemoths battling it out in an unwinnable processing power war that would likely alienate anyone outside of a core gaming crowd through massive hardware costs and a mountain of samey shooters. Nintendo, for better or worse, has forced them to switch up their game and move outside their comfort zones in an attempt to appeal to other audiences. That can't be a bad thing.