We have a winner. was the official 100,000th post, in case anyone was wondering.
And it really was good timing. I just happened to check and we were almost there, I refreshed a few minutes later and saw we were
1 away, so BAM - Done and done.
The official time of Post 100,000 was
12:26 PM ET today -
December 26, 2006. That makes Reel Deal our winner for this Christmasy guess:
12/25 19:01 - Reel Deal
How funny that so many days had multiple guesses but today had none. Congrats, Reel Deal! Your $75 (2,657 posts as of the start of this contest) will be transferred shortly - confirm your Stars name for me though, will ya? Cause the city I'm seeing isn't what I was expecting. Edit: Never mind. I found it. Money has been transferred. Merry Christmas +1, sir. 
And thanks to everyone - EVERYONE - who is a member of this community for helping get us to this milestone. I can't wait to see what the next 100,000 posts will bring. Maybe we should start a new thread with predications... Nah!
P.S. See attachment for the winning moment scrrenshot. I think it's funny that Today's birthday is someone I've never heard of and our newest member is very obviously yet another spammer. Gotta love it.