Clément Granjon (aka Weilynn on BA) has made a neat tutorial on how to reproduce the classic 3D hologram style using Blender.
Weilynn has a thread on Blenderartisits.org, which has a brief run though of the tutorial, along with some reference pictures of the more important aspects (including node setup etc).
Theres also a videotutorial walkthough which can be found in HD on Vimeo, and is also up for dowload on Weilynn’s site here – http://clems.g.free.fr/misc.html
