PlayStation Portable first impressions?

Alright, so a few of you lucky bastards managed to get your hands on the PlayStation Portable, which debuted in Japan today, and you owe it to the rest of us to give us the scoop: How's the battery life? What's the deal with the startup time? How are the first batch of games? Is it good enough to make you toss out your Nintendo DS? Post up your impressions in the comments.