Okaaay, E3 equals....
Republic Commando - gods. awesome.
Mercenaries - looks cheesy but fun
Dead or Alive Ultimate - DoA just got weirder and cooler
Halo 2 - boo'ful scenery, and "the ultimate anti-sonuvabitch stick"
X-men Legends - for the people like me who wish they had the money to spare for expensive comic book addictions
Dawn of War - it's hard to say, but this might be better than a Dan Abnett novel - and that's saying a helluva lot for those who've missed out on that
100 Bullets - crazy fun gunplay
Ghost - now they just need a 3d version of Starcraft and they're set
.....and many more I probably missed...