What games have the easiest platinum trophies?  By easy, I mean the LEAST difficult to acquire.

Terminator salvation, just... finish the game and you got the Platinum

nah, not that easy, you need to play on hard mode and become a "commander" (no idea what that means, never played the game).

defiantly not Wipeout HD

Terminator Salvation.
Just beat the game on hard, and you get it. The game is dreadful though.

Uncharted is also easy, I thought COD5 was Ok and another easy one is Godfather 2. Sega Mega Drive collection and Hannah Montana also

I Played the game and got the Platinum, trust me you have to beat the game on hard, and then you get the platinum... it's the easiest Platinum of all time lolz

Terminator Salvation is difficult in that having the willpower to trudge through the game is Platinum worthy.

I heard the Terminator game is so dang glitchy that it was almost impossible to beat alone.

Its easy, just the worst game imaginable. Honestly, It's laughable. Here is why http://www.vgchartz.com/forum/thread.php?id=76341&page=1

SOCOM, Mirror's Edge and GTA IV all have very quick trophies that will barely take you any time at all to get.