Today XPAND has released a 3D Plugin for making 3D Presentations in Microsoft PowerPoint 2010, that is supposed to help you easily make more attractive presentations in stereoscopic 3D format. But apparently the plugin only works if you embed 3D objects in your presentations as normal 2D objects such as text or photos still remain in 2D. So no 2D to 3D conversion, meaning that you would need to work with 3D objects if you want to get the presentation to look 3D, otherwise every non-3D object will be positioned at screen depth. The plugin allows you to export the presentation in 3D format (.pp3d) that can be viewed in stereo 3D mode as well as the normal powerpoint 2D format. To view the 3D presentation you need to use the viewer that comes with the plugin, you cannot open it normally.
Here is the 3D output with the test slide that I’ve made with the severely limited trial version of the 3D plugin, the only supported 3D output format is Over/Under and on top of that half vertical resolution (squashed). If you open the test photo of the output you will notice that all the elements of the presentation are in 2D mode and only the overlayed watermark logo is in 3D format (with a bit too high separation). If you are interested you can download and test the trial version of the plugin that besides the watermark logo is also limited to 3 slides and the viewer to 3 minutes of slideshow of the presentation. For viewing a 3D presentation in steeo 3D mode you would need a 3D HDTV or a 3D Projector supporting stereoscopic 3D in Over/Under mode (option to manually switch in that mode for 3D input), but you can capture a screenshot and then preview it in a 3D photo viewer to see the effect. The plugin requires you to have Microsoft PowerPoint 2010, it will not work with older versions.