I was just playing around a bit with my projector, you can get some amazing effects that are really similar to laser effects.
Here is another video that shows what can be done. The video uses a projector that' has average power, it's not necessary to have a super powerful projector, just some fog or better, haze. The person in the video explains how the software works and shows some effects, this would be amazing to be able to do. I don't mean to be a nag, sometimes i look around to see if any new software is available, come across some of the videos that show the effects off and get all excited.. The video mentioned sounds nice, i could never get it to work though, some people have i guess. https://www.youtube.com/watch?v=D9owK6OHUWE