Hmm.... I'd like to see Guards Guards too. I don't think it would work to do the Watch series out of order, so you'd have to start with that.
Who to play Vimes? Hard one. Someone compared Vimes with Gibbs in NCIS and it took me a while to get my head round the idea, but I wonder if Marc Harman (Gibbs) could pull it off? I've never seen him be a real action hero, but he wouldn't be an actor if he couldn't, and he's a good one. I don't know if I could go with an American accent though, the whole thing is so English, I'd hate to see it go over the waves. As with all film adaptations, whoever plays the parts will fit in with some people's imaginations and be totally wrong for others, it depends on which picture was in our minds first. I'd love to see drawings of Vimes from the readers fingers. They'd all be so different. Of course the book cover says a lot, but do we go with that in our heads, or do we create something quite different?