Yo!
So.. GameTrailers has only handed out 9.8 as their highest score.
In 2007, Halo 3 and Super Mario Galaxy was given 9.8.
In 2008, GTAIV was given 9.8.
From 2009 to 2012, none have achieved that accolade.
Until today. The Last of Us just recieved a 9.8 from GT.
Review here => http://www.gametrailers.com/reviews/rt9xz3/the-last-of-us-review
Rock on ND :'D
EDIT: Another fun thing is that our own site here at VGC also gave it 9.8. No game has ever gotten that high here XD