This worked for me.  The search function is buggered right now so just lock it down if its a repost.
According to Major Nelson if you go here you can get it free right now: Edit...you need to make an account, if you don't have one it will skip any payment info part. Edit,Edit... just seconds later than original post.
  http://www.telltalegames.com/cart/
 

See for your self:
  http://twitter.com/#!/majornelson 

121GIGAWATTS? I didn't realize that coupon code was still valid. Do they ever expire?

Thanks man! I appreciate it

nice, thanks.

Thanks for that I'm downloading the game now.

Isn't that, you know, piracy?

Oh cool, it's still going on eh? Also when I did this a few months ago, I thought it was gonna give me episode 2 which would make me need to buy episode 1 to enjoy properly. Now that I realize it's episode 1, I'm downloading it immediately.

Great downloading, i may get the next one's later on.

Thanks a lot, guys!  Holy effin' crap!

" Isn't that, you know, piracy? "

 
i have no idea what i just got for free.  is it a pc/mac download?

"  i have no idea what i just got for free.  is it a pc/mac download? "

Thanks I have not played an adventure game in a long time but Im not turning down a free game.

" @htr10 said:

"  i have no idea what i just got for free.  is it a pc/mac download? "

Either. It's the first episode (out of five) of Telltale's Back to the Future adventure game. "

awesome find!  thanks for the heads up.  I am now downloading a game for free that I was considering purchasing.  I guess they won't have any trouble getting me to buy ep2 now.

" Oh cool, it's still going on eh? Also when I did this a few months ago, I thought it was gonna give me episode 2 which would make me need to buy episode 1 to enjoy properly. Now that I realize it's episode 1, I'm downloading it immediately. "