I too think it is going to be Michael.. He knows how to get to the island or at least close to it.. He could still be going by his new name Kevin Johnson so that could be why no one came to the funeral.. Plus Jack at this point wants to get back to the island badly.. So he might have been one of the few other people who has left and got close to the island and could have told Jack roughly how to get there..

Does anyone find it odd that the Oceanic 6 were so popular but the funeral director didn't seem to reconize Jack.. I know the beard could have thrown him off but it seems odd that he didn't say anything to him about it..

__________________
Please don't give up, Des. Because all we really need to survive is one person who truly loves us. And you have her. I will wait for
you. Always. I love you, Pen

DESMOND: I love you, Penny. I've always loved you. I'm so sorry. I love you!
PENNY: I love you too.
DESMOND: I don't know where I am, but--
PENNY: I'll find you, Des--
DESMOND: --I promise--
PENNY: --no matter what--
DESMOND: --I'll come back to you--
PENNY: --I won't give up--
BOTH: I promise. I love you.