Count me in as ready to lose about a few hundred hours of my life playing this game. I was oblivious to the Fallout series prior to Fallout 3. On a whim, I decided to give it a shot. I was hooked instantly.
Fallout New Vegas isn't a sequel but another story within the same world of Fallout. Not much info released yet on the game (although there are some rumors that are very likely). More info on the game will come in the next couple weeks via Playstation and Xbox's magazine.
According to this (ps2.ign.com), FFVII-2 will supposedly be availabe as a DVD movie that is playable only on either the PS2 or the upcoming PSP. I don't suppose this is surprising, but so long as I'm not forced to get a PSP to view this, I won't mind.