Firefox extension...
 

PicLens (http://www.piclens.com/site/firefox/win/)


This is one of the best addons for firefox that I've ever seen. It allows you to scroll through all of the found pictures in say, images.google.com or www.flickr.com. I'm not sure the criteria when it can be used, but it looks like it depends on thumbnails.

To use, move your mouse over a picture and you will get a play button. Then use the mouse to scroll. Mouse wheel to zoom. Anyway, check out the site.

RE: Firefox extension...
 

+1 for PicLens FTW. I found out about that a few days ago. I must say that it is definitely one of the coolest firefox EXTs I have seen. The only thing that could make it better is if there was a way you could save some of the pics to your HD.