Free Disk Usage Analyzer is a free hard drive analysis tool that reveals those files and folders on your drive(s) that are occupying the most disk space. It displays ranked lists of both your top space-hogging files and folders.

Usernamecheck is a free web service that checks the availability of your desired user name across more than 60+ sites (webmail services, social networking, video and music sharing, etc).

Vertor is a torrent listings site with a simple premise: only display torrents that are checked to be free of viruses and malware and have been verified to contain the content that they claim. Offers media “previews” on the site such as 20-seconds snippets from audio files and thumbnails from videos.

Impressive is a free multi-platform app that can display any PDF file or folder containing image files (JPEG, PNG, TIFF and BMP) as a slideshow presentation. It can be used to present PDFs or images as full-screen PowerPoint-style presentations or it can function as a full-screen reader. “Impressive” also offers a combination of sophisticated slide transition effects and a number of practical presentation tools, including spotlight effects, box highlighting, zooming in, and an overview screen that displays slides as thumbnails and allows for quick navigation.

Dyson is a free cross-platform real time strategy game with abstract visuals. It manages to be simple and elegant even as it combines elements such as the emergence of life, a Darwinian “sperm wars” motif, and intra-species competition with your standard world-domination game concept.

TaggedFrog is a free utility that allows you to tag any files on your hard disk by keyword and access or filter them through a tag cloud. Users can also create filters by file-type to filter their results, and create favorite “sets” or combinations of tags for quick browsing.

If you are interested in some very cool short animated films check out the Film Page on the University of Hertforshire’s digital animation program (also check out their page on Vimeo). These films are made by students as graduation projects and are really very impressive.

this page, set up by Japanese TV station Wowow offers an interactive experience of a live Radiohead performance of their track “15 Step” during the group’s 2008 Japanese tour. It allows you to remix the video in real time using pixellized flash video streams captured from 12 different points-of-view, and to generate your own custom mix of the live performance.

Taksi is a free video/screen recording tool that can capture 3D graphics applications such as games. It will record any Windows application that uses DirectX 8, DirectX 9, OpenGL or GDI and create an AVI file using any type of codecs that are installed on your system (or capture frames to PNG/BMP). Audio capture is not yet implemented.