Since Doohan's IMDb entry identifies him as being primarily a singer whose only credits have been as himself, as an extra and one appearance as a Garth Brooks lookalike on a game show, I'm thinking there really aren't many details to know.
Now, while I can appreciate that you might be a fan of his (possibly a follower of the Mudflaps, I don't know) this is the third thread you've started about Chris Doohan since joining (your only other post mentioned him in passing, as well) and none of them have really had anything in the way of content. Great, you like him and want him to do well -- we get that, and it's fine -- but there just isn't much of a topic for discussion here, so I'll close this.