Beti wrote:Sean Pertwee (I didn't realize who his dad was - now it's blindingly obvious)
not till I looked him up on Wikipedia.
Pertwee can't be that common a name, but I just didn't make the connection.
I think Vimes is the most important casting not because he's the most difficult necessarily (he's probably not) but because I think the most important cast-member is whoever is the central character in the show's story. If the show is following the books closely, that's gonna be Vimes: Carrot may be the catalyst, other characters may get viewpoint narration, but the story is always Vimes' emotionally etc.
Of course, the show might have a different angle. It;s been mentioned somewhere that it'll feature original characters - it might take the approach of having the Watch already established and have a new recruit as the central character.