PicLens is an awesome Firefox plugin that works on both the PC and Mac computers. I actually found this plugin on accident while I was searching for a link preview plugin for Firefox. The reason being, that I work in an industry that requires me to be on the internet all day, and I’m tired of being Rick Rolled when I visit certain forums.
Anyway, I downloaded PicLens and found it to be really cool. All you have to do is visit an image based website such as Google Images or Flickr and hit the little “play” button that shows up on the image itself. This will launch the PicLens program and gives you an awesome interface for viewing the images on the page. Once you have it installed, try a search for lol Cats in Google images and try out this cool program and have a few good laughs.