Life imprisonment. As others have said, death is too good. But I also reckon there's probably useful info he can dole out as required over the years to come. I doubt the US has gotten all his secret bank account details, or the locations of all his stockpiles, or who he's paid off and how. The Iraqi gov might end up being able to use that info in the future if they're careful.
Oh, and I wouldn't bother with the pork blood thing. I don't know what exactly you think of Muslim beliefs of the afterlife, but pig's blood isn't the only thing that sends you to hell - his crimes alone are in theory capable of that. Although of course as in Christianity Islam does feature an all-merciful God, so who knows exactly what his fate would be.
