He's finished Game of Thrones and loved it, and has previously enjoyed LOTR. I didn't like both (couldn't get past 1st chapter of GoT although I did plod through middle earth until the bitter end) so I can't really judge what he might like, just that it probably needs to have millions of characters, span years and have some kind of ridiculous fantasy element. Anyone help? I'd love to get him a new collection for christmas.