I occasionally use stock photography for my work. Sometimes I make my own. I’ve never encountered this problem (found via Engadget) before:
A young lady going back to college appears to have a bit of trouble deciding whether she wants a Gateway or a Dell PC. Either that, or her parents have each separately decided to buy her a PC – and while Mum favours Gateway, Dad favours Dell.
I did a quick search on my favourite stock photography site, and lo and behold, there she is (about halfway down). I suppose she looked fresh-faced but also had just enough Scarlett Johannsen going on to be appealing. And that’s a nice toque. Personally, I would have gone with this jean-clad hottie, but maybe she was too Nelly Furtado for their demographics.
DarrenBarefoot.com 
When I worked for one company, they used a particular wildlife/sunset photograph for all their materials. They had paid to protect use of that image within their vertical market. Since they were paying 5-digits for this privilege, I commissioned a graphic designer to create another image that picked up on the general look and feel without violating copyrights. (This cost 1/10th of the annual licensing fee.) As we were finishing this project, I happened to stay up late one night. A bizarre Bible study by mail commercial came on. All of their materials were emblazoned with the wildlife/sunset photo! Although I’d already changed to the newer image, I was, and am, eternally wary of purchasing licensing rights for just one vertical market. However, maybe Dell and Gateway should at least find out about vertical protection!
Apparently, she’s joining the navy after she gets that new computer:
http://www.navy.com/image/pic/yvr/you/lifeaccel/careers.jpg