If so, watch the "CM" videos that were uploaded to Nintendo of Japan's website last night. (Here.)
Granted, it's possible you won't find all (or any) of the guys in the videos "pretty." (The second one from the left in the photo below looks a bit lesbian-ish to me, for instance. Not that there's anything wrong with that!)
Regardless, I believe these "boys" are Japanese celebrities, but I couldn't tell you their names or why they're famous.
If you'd rather watch a video that, you know, actually shows (some) of what Nintendo's upcoming portable system is capable of, watch the video at the bottom of the same web page.