Blender’s compositor is an immensely powerful tool. If I didn’t know better I’d be inclined to think it was Turing-complete.
I have been exploring some of those possibilities in trying to create a “cloning” effect–like Multiple Man from the X-Men, where you have more than one of the same actor on the screen at any given time. For this test I went for the effect seen in Wolverine & the X-Men episode 12: “eXcessive Force”.
While it’s a decent effect for an animated cartoon like that, I think there are better ways to transition the “clones” into the scene. However I only decided that after I finished the clip (to my satisfaction) and called it quits. Here it is, for what it’s worth.