How about this guy...
Josh Holloway. He's got great range as an actor - he is convincing from the sweetest most tender scenes to the most chillingly violent. In fact, it was seeing him connect to that place of deep, dark rage that convinced me he would be perfect for RJ.
I've heard the phrase "if looks could kill" a million times, but I'm not sure I ever really saw it until I saw this:
It's much better in action:
http://abc.go.com/watch/clip/lost/SH0067...quick-cuts (
spoiler alert: this is a "Previously on Lost" clip from season 6)
The only potential drawback I can see is that Holloway in real life is about 4 years older than Repairman Jack is in the books. Now, if Beacon would get off their butts and make a movie, it's a non-issue. The longer they wait, though, the more great possibilities we lose.