PicLens

I've been trying the beta version of PicLens, a groovy little plug-in for Mac Safari browsers. It basically makes photo sites like Flickr a much more immersive experience, allowing you to browse pages of photos in a full-screen slideshow format.

After installing the software, mousing over an image on a site that's supported by PicLens presents you with a small extra icon. Click it and after a few seconds the picture grows smoothly to fill the screen with the high-definition version. PicLens then starts pre-caching the other images that were on that page, and you can navigate through them with an interface similar to an iPhoto slideshow. It makes surfing Flickr a completely different experience as each picture is show at it's best.

Currently it's OSX Safari only, although a PC version is promised. I'm hoping for a version for my current browser of choice, Firefox.