Here is a convenient HD Video collection playlist for you to drool on until the game comes out January 2012:
Final Fantasy XIII-2 QUEST FOR LIGHTNING
Final Fantasy XIII-2 BOSS BATTLE
Final Fantasy XIII-2 New Adventures
Final Fantasy XIII-2 "Despair" Trailer
Final Fantasy XIII-2 The Promise trailer with soundtrack "New World" by Charice:
Final Fantasy XIII-2 Gameplay Commentary from Square Enix:
Final Fantasy XIII-2 Japanese commentary Trailer with game producers Kitase Yoshinori and Toriyama Motomu: