here, here and here - previous ads spoofed past winners such as Shakespeare in Love and Lord of the Rings: Return of the King. This new ad spoofs James Cameron's award winning and several billion dollar grossing Blockbuster Titanic.
The ad was originally seen in Variety on December 13th, and is now online (above).
Whilst I think the ad is really good and a great idea, I think the text colour - in this case - is quite poor and difficult to read. Nonetheless TS3 has my vote.
Thanks to The Pixar Blog for alerting me to this.