I keep coming up with Giovanni Ribisi. He has the right general demeanor, where he can play the shifts between quiet confidence, outward humour, and covert but commanding neuroses, with the rare but poignant nervous and self-conscious ranting.
He's also about the right age and stature, and with the right makeup and hair department, he could be made up to look well enough like me.
The music at the end credits would be this track:
Yes...that would be about perfect.
...depending on the screenwriter and director, of course...
