Watching Mirrormask last night was an odd experience for me, as the film features nearly the entire voice cast for Discworld Noir. Rob Brydon (the voice of the protagonist, Lewton, in Discworld Noir), Robert Llewellyn (voice of several characters in Noir, including my personal favourite - the Butler ) and Kate Robbins (the inestimable voice of Carlotta, and the troll diva Sapphire, whose song was one of Terry Pratchett's highlights of the game). That's three quarters of the voice cast of Noir! I loved working with these people - it was a complete joy throughout.
It made me long for another opportunity to work with such a fine cast of voice actors on future projects, and also wish that Noir was available in some currently working form (it only runs on Windows 98). In Europe, this is considered one of the last great point-and-click adventures. In the US, it is almost completely unknown, since publisher GT Interactive went bankrupt shortly after its release.
As for Mirrormask, a delightful kids film with stunning art design by Dave McKean. If it falls short, it is only because the CGI is in places not as beautiful as McKean's ideas.