FaceOnBody
FaceOnBody is the first software ever created exclusively for digitally swapping faces (a bit like Photoshop minus all that extraneous functionality). FaceOnBody allows users to alter digital photos copying any face onto any body, quickly and easily. ... Your kids will be endlessly entertained seeing their faces on the bodies of Shrek and Jimmy Neutron. ... Your Real World audition tape was returned unopened? ... Put yourself in Britney's embrace or your boss in the cast of One Tree Hill (or any number of lame WB teen dramas).
http://www.faceonbody.com/download/FOB_Install_FB022.exe - 1Mb - Download - Screenshot

The Atom Builder
Chemistry teaching software which simulates the building of any of the first 20 atoms (up to calcium) on screen. Learn how atoms are formed from electrons, protons and neutrons and how the electrons are arranged in shells or energy levels. Includes a reference section to support students... Use as a demonstration tool (using a projector), as a teaching tool - get pupils to access the reference sections before attempting the simulation, or as a revision tool prior to tests or exams. ... Price includes full site license.
http://www.chemistryteaching.com/download/chemxe.exe - 579Kb - Download - Screenshot

3D Chemical Elements ScreenSaver
Have you ever imagined the smallest bricks of the Universe - all that atoms with their protons, neutrons, electrons and quarks? With 3D Chemical Elements Screensaver you have the unique opportunity to see how they look like in reality! It brings you actual 3D models of all that micro-stuff both... There is a great educational content with captivating info on each chemical element currently known by scientists. ... You can either let the screensaver entertain you or can easily control it with your mouse and keyboard.
http://7art-screensavers.com/files/3DChemicalElementsInst.exe - 4Mb - Download - Screenshot