My highlights this year are CoD4(however I'm still concerned about the gameplay), Metal Gear Solid 4(although the trailer was a bit boring this year, but hey it's Snake and the gameplay is outstanding), Mario Galaxy(as an Wii owner since march I'm really excited about this game, although I haven't played one hour yet due all my university stuff. Just my girlfriend uses it all the time and has fun with Zelda).
These are my top 3. Gran Turismo 5 looks great but it will be a long way until they release it and I doubt everything was ingame graphics, just as Killzone 2 wasn't.
For tons of E3 video footage visit
www.gametrailers.com.