Video Copilot have posted a tutorial on creating a 3d glass effect in After Effects.
Video Copilot - Sci-Fi Weapons Experiment
Andrew Kramer demonstrates several types of sci-fi weapon firing techniques in this fun and instructive video.
Dark Corner is a plug-in for After Effects that creates Ambient Occlusion and Z-Depth information from images.
3D Hologram with After Effects, Boujou, Mocha and Cinema 4D - Tutorial
Mike Gentilini creates a 3d hologram with After Effects, Boujou, Mocha and Cinema 4D.