Paul Lasaine is a production designer, VFX art director and supervisor, matte painting artist and supervisor, and won an Annie Award (awards are for outstanding animation) for his work on Boxtrolls.
Though the original video was posted in 2007, it's still a high-impact, low-budget effect for 2020. It's fairly easy to achieve for the rank beginner if you're willing to invest some time and patience. While I do enjoy the more commercially available projection effects we have access to these days, what I like about the Pepper's Ghost illusion is that it looks realistic and has a huge "wow" factor. I feel that we've become so accustomed to the look of CG, the "reality" of Pepper's Ghost is still as viable as it was in 1862, when it was developed.
Take a look at the videos and let me know what you think!