I like the harsh effect, especially the outline effect on teh shirt; it kind of looks like one of those commercials where they trace over the people with cartoon effects; also, some nice gritty soul qualities to it.
This is fantastic (not only the moustache). The PP really makes for a unique shot. His expression is great. All the blown out highlights work very well together too.
I love the processing of this photo ... really works well! Would you post details on how you achieved this? I'd also be interested in seeing the original if you post the steps ...