Managing Digital Photos: iPhoto, Image Capture, or Something Else?

Speaking of digital cameras, I thought I'd ask you all: What do you, TUAW readers, use to manage your digital pictures?

Do you use iPhoto, Image Capture, the software that came with your camera, or some other 3rd party program? Let us know which one and why and whether you're doing just daily pic management or using these programs in some sort of professional workflow.

I've mostly been switching back and forth between iPhoto and Image Capture myself, but the Nikon came with a copy of Nikon's PicturePerfect, and I'm wondering what is the best for me to use and what other image managing products are out there of which I remain ignorant. Please enlighten me.