1) Should also probably include GoW 1 & 2 for a better idea of story
2) Haven't played RDR, but LOVED Read Dead Revolver, so this one is probbaly good too.
3) Haven't played this, but on my list. Again, should probably play Uncharted 1 also just for a better understanding of the story. Also, Uncharted 3 will be released next year.
4) If you don't like FPS, then don't bother with this. If you do, then GET THIS GAME!
5) Again, get Assasssin's Creed 1 and 2 also... The main story is pretty short in all of these, so you can breeze through 1 and 2 just to ready you for Brotherhood in which you can go all out with side quests.
6) I can't stress this enough.. Get EVERY piece of DLC as well as the Awakening Expansion. The story is sooo much deeper than the initial Dragon Age: Origins story. Also, Dragon Age II comes out in March, so better hurry!
7) This game is hit or miss with the fans. I loved it despite its linearity, but a lot of people didn't. You may want to try this one out first to make sure. Though if you are an avid FF fan like myself, I don't see how you could not like it.