E3 as a whole sucked hardcore this year if you ask me, but out of the Big 3, Sony did the best. They at least made announcements and showed games and a decent amount were exclusive or timed exclusive. Also, they confirmed that Metal Gear Solid 4 is indeed a Playstation 3 exclusive.
Nintendo showed the cool Wii Wheel and Wii Zapper, plus Mario Kart, but I was expecting more from Smash Bros.
Microsoft was just plain awful. They promoted too much on the multiplatform releases, and the only announcement they made was a fugly Halo 3 console.