Greg may be seen in the trailer which features on YouTube at http://www.youtube.com/watch?v=N0gHwasfR7g, and the screen captures shown here are drawn from there. Greg plays a promoter who auditions the wannabe Bob Marleys who are the centrepiece of the story - 'some sort of welcoming party for Captain Cook and his Endeavours' is a memorable line.
I know little about the film other than I have seen in the trailer, but you may be sure I'll be going to see it, and not just to see this early NZ glass artist in his new role - it looks like a great movie.