Gonna throw my litrejons in Paul: Not a clue. Leto: Liam 'I mentor and die in EVERYTHING these days ' Neeson Jessica: Lena's a good choice, but to throw a different curveball, how about Nicole Kidman? Gurney: Ron Perlman springs to mind Duncan: Viggo's got that nobility about him, he'll do. Stilgar: Oded Fehr. Okay, he's reprising his role from the Mummy, but I don't care, he's that freaking awesome. Baron: Ian Mcniece. He IS the Baron. Feyd: Robert Pattison. Just to give the Twilight fangirls fits. Beast Rabban: Not sure. Piter: Steve Buscemi Chani? Hm...unknown, I think. Just for giggles: Summer Glau. Irulan: Meh, I guess Johanson. Shaddam: Hopkins Reverend Mother: Jessica Lange in makeup. Sigourney in Makeup would also work.