Photoshop! On Android! Adobe's free Photoshop app for Android is surprisingly just as slick as the iPhone's though it's missing all of the special effects, focusing on basics like saturation, exposure and cropping.
Basics are fine—and we like what it does there—so our real gripe is that there's no adjustment for white balance, which is notoriously shitty on the G1. But hey, it's free in the Android Market right now. [Adobe]