I don't want to invite a tiger. If my childhood has taught me anything it's: do not invite a tiger around for tea, you'll be eaten out of house and home. Or, perhaps, always invite a tiger for tea as you'll get taken out for dinner after. Maybe a synthesis of the two? Invite a tiger for tea when you want to go out, as then you'll have a reason to eat out. Perhaps I am reading too much into it.
I'd have:
Jesus
Richard Dawkins
My Great great Uncle Gaston - the black sheep of the family who noone knows nothing about, as noone was allowed to speak about him.
I'd have a nice old chatter with Gaston and let Richard Dawkins go head to head with Jesus.