Here's a shot of our dog Katie at play. Not that this is the greatest picture, but it was easy to capture in dusky conditions with the D30. I put it into "sports" mode, which automatically puts it in continuous shooting mode (at 9 frames per second), with "AI Servo" focus and shutter speed priority. I really should have bumped the ISO (this was shot at 400), but I just didn't think of it (I was having too much fun yelling "Yeah, baby! And I'm spent...").

Katie at play. f5.6 @ 1/50, ISO 400, cropped

I've been experimenting with raw capture, which gives you more options when adjusting photos in software such as Apple's Aperture. As luck would have it, I shot some outdoor pictures recently (not worth publishing) with the camera set on tungsten white balance. Whoops! With a little practice, I was able to rescue them by setting the white balance in Aperture.