SOCOM 4 will hit shelves in a little over a week so the folks at Sony have released this nice developer diary which covers the single player portion of the game. In it you get to meet your squad mates, learn about what you'll be doing, and hear a few lined of cliched dialog ("I'm nothing like you").
I checked out the game at E3 last year and liked what I saw. The shooter market is a bit over populated but the graphics were sharp and gamers haven't tried to escape too many wars in South East Asia Recently (OK, there was Army of 2:The 40th day but other than that I'm drawing a blank.