I know you all think its micheal, but what if it was that russian dude, no one knows if he died, he put the grenade there and pushed himself away from the window, if he was meant to die, he woudnt chuck the grenade, seems quite probable that hes the one on the boat, also the people on the boat know everything about everyone on the island, so they woud recognise micheal, where they woudnt reckonise the russian guy.

I believe this was brought up in the thread Ben's man on the boat.. I am going to close this so not to have dupilicate discussions..

__________________
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.