I use corbis.com at school, some are free, some you have to pay for the right to use. But it has lots of good high quality pics.
I found Googles image search much more enlightening. But then I'm a fan of jackass (stage show sounds a bit ott though)
Altavista has probably the best Image search libraray, although Google has now caught up a lot. There are quite a few stock libraries online, some better than others, some free some paid, and others trade. If anyone is interested I will dig out the urls from file and post them. OWG
I was a big Alta user for image searches for quite some time. About 6 months ago I used Google for an image search, found exactly what I needed, and haven't looked back since. Alta is still good, I just like Google a little better. Maybe I'm just used to it
there is a new image search engine at http://www.netvue.com that uses Java and displays full-sized results, instead of small thumbnails.