Incredible simulations by motion designer John Robson.
Like the wrap party for World War Z.
Videographer and After Effects artist Parker Paul sez:
Filmed an hour of footage from my window then used the sky as a blue screen to composite all the birds that flew past.The first wave of birds are the originals. The rest are cloned from those.
Related: Flight Paths
Turkish artist and photographer Erdal Inci:
…has created a hypnotic series of GIFs that takes the concept of cloned motion to a truly eerie level. Often using images of himself in mundane situations, Inci transforms simple snapshots into entrancing video loops.
Many more here.