My mother-in-law is Shelob...
And I have, in this case, the misfortune to be Frodo...oh well! I do have the great fortune to have my husband as champion (he's not really Sam, but I've seen some VERY Samlike behavior from him at times.) I'd say he's more Denethor than anything, even though he says he's the Witch King. His favorite characters in the books were Gandalf and Gollum, but he LOVED John Noble as Denethor in ROTK, all the while acknowledging that he was, indeed, a cartoon villain.
Cheers!
Lyta