My dog.
Famous people: Hatshepsut, Akenaten and his wife Nefertiti, Tutankhamen and his wife Ankhesenamun, Ay, Siddartha Gautama, William 'the Conquerer' and his wife Matilda, Henry 2 and his wife Alienor of Aquitaine,...
Then I'd probably want to meet everyone (and I mean everyone in human history) who has committed suicide and write an exhaustive study on it, ranging from their upbringing, their mental health, their reasons to their methods.... I know it'll be a long while, but eternity needs to be filled and that would be worthwhile to me.
And finally, when my partner dies, hopefully at a very advanced age, and he wishes to spend eternity with me, I would be with him, taking care of him, looking after him, listening to him, talking to him...