This tutorial explains how to create a hologram, like those seen in many different sci-fi shows. The cool thing is, the editing process is easier than it sounds. It takes two tracks, and a minimum of three effects.

Instructions:
Track 1 is your Background
Track 2 is your hologram

On track 2:
Fix/Enhance - Hue, Saturation, and Vibrancy to match your desired hologram color.
Pip Designer - key or mask out your actor if necessary, and position the clip as desired.
Power Tools - set Blend Mode to Screen.
Effects used to make this effect are TV Simulator and Fine Noise set to 70.
Set clip opacity to 75.

Render and Enjoy!

Note: You can either key out an actor shot against green screen for an "in-person" effect, or use PiP Designer to place them anywhere you want. (On screens, in HUD's, on panes of glass, "projected" from handheld devices, etc.)