Over the following years, the work produced by Classic Theatre International under Barnett's artistic direction was seen on major stages in Germany, Switzerland, Holland, Austria, Italy, Luxembourg, Greece, France, Spain, England, Belgium, Denmark, Finland, Norway, Sweden and Japan.  For the group, Barnett wrote his second stage
adaptation, an acclaimed version of One Flew Over the Cuckoo's Nest.  Barnett's most prominent roles include Lear, Hamlet, Iago, Macbeth, Richard III, Shylock, Prospero, Richard II, Coriolanus, Brutus, Oedipus, Willy Loman, Eddie Carbone, Becket and
Heathcliff.  In addition to plays by Sophocles, Ibsen, Chekhov, Anouilh and most of the American classics, he has directed all of the Shakespearean tragedies.  

     He is also an acting coach specializing in character development and has lectured extensively as well on Shakespearean tragedy and on the life of Van Gogh, Gauguin and the Impressionists at universities and libraries across Europe.  After returning to the States and appearing in a number of independent feature films, he wrote his first screenplay, The Eyes of Van Gogh.