Doppelganger
Hayasaki is an inventor working on an Artificial Body. It is not going well and he is stressed out and on the verge of being fired from the research division of his company. His doppelgänger appears to help him out of the rut he has created for himself.
Starring
Watch "Doppelganger" on Kanopy released in 2003. It's a comedy and thriller movie, and has a rating of 6.4 out of 10 from Imdb which is usually fine for this kind of movie.