Ok. I gotta post before I forget my people that I'm thinking of. How about this...
Belgarath: Ian McKellan
Polgara: Angalina Jolie or Lucy Lawless
Garion (Young): Hmm... I'm kinda seeing Devon Murray (Seamus Finnigan)from Harry Potter, but he's porbably a little too old, now... Or Spencer Treat Clark... He might be too old now, too, but I dunno...
Garion (Old): I agree with the person that said Heath Ledger. I think he'd portray Garion rather well.
Ce'Nedra (Young): Bonnie Wright, maybe? (Ginny Weasley) Yes, she may not seem the type in HP, but I think she could pull it off.
Ce'Nedra (Old): Julianne Moore, maybe? Or Geraldine Somerville (Lily Potter).
Silk: Perfect idea having David Spade! God, he would be wonderful!
Barak: I'm kinda thinking Robbie Coltrane from HP (Hagrid). Barak needs to be big and bear like, and Robbie did wonderfully when playing Hagrid.
Durnik: Now that's a hard one... I could probably see Huge Jackman playing him, but I agree that maybe he's just a bit too young. I don't see Durnik too young, but not too old either...
Beldin: I can see John Rhys Davis playing him. He would be a good character.
Poledra: I can see Sigourney Weaver playing her. She's pretty good age, and she's a wonderful actress.
Salmissra: I'll agree with Salma Hayek. She's pretty good, and would probably pull it off rather well. Either that, or we can dress Alan Rickman in a dress. *lol*
Asharak: I could see Joaquin Phoenix playing him. He can be an ass when he needs to be, like in Gladiator. Either that, or, maybe, James Purefoy or Eric Mabius...
Mandorallen: Possibly Bruce Willis or Mel Gibson. Both could pull it off, and are more or less built to the character.
Hettar: I think I could see Orlando Bloom playing this one. He's dark shinned with black hair... Or Jonny Depp, maybe.
Lelldorin: Possibly one of the Phelps twins (Weasley twins). They're tall and skinny, and are very childish.