Parasyte

A really neat manga by Hitoshi Iwaaki. It tells the tale of unknown spores falling to earth and infecting humans and animals. These spores can morph the part of the human body they infect into different forms.

The hero of the story, shin, manages to avoid getting his brain infected. The strange being takes residence in his left hand. The two must survive together and figure out the mystery of where the spores came from. Lots of gore and badass art.

In the original Japanese version of Parasyte, Shin names the parasyte that matures in his hand "Migi," which translates to "righty" (because it's his right hand.) However, when manga are localized for English readers, it's common practice to not only translate the Japanese into English, but also to print the pages as mirror images of their original selves so that they read from left to right instead of right to left (as is the way of Japanese publishing.) To accomidate for this, Mixx Entertainment (who handled the American version) had to change the parasyte's name to "Lefty."

An alternate method, as employed by Dark Horse Comics for Blade of the Immortal by Hiroaki Samura, is to actually cut and paste each of the frames so that they appear as they were originally intended by the artist.