One thing I've learned, and I have mentioned it before but I believe it even more so now, is to use cloudy white balance, especially outside even if it is sunny out. I switched from auto to cloudy and I am just overall happier with my images. Now custom white balance would probably accomplish the same thing, or even be better, but in the meantime, I am so happy with cloudy. The colors are more vibrant and more true to the actual event. I don't feel like I need to take every image into PSE just to make the colors pop. I know, I know, if I shot in RAW it wouldn't matter as much because you can choose your white balance post processing (even as a jpg I can change it), but I'd rather just be able to say~this is (S)traight (O)ut (O)f the (C)amera.
There are other "Turn the Hose On" images over at Jill's blog to see, take a peek!