Nintendo introduces the Wii Zapper. It will come out later this year and cost $19.99. Resident Evil: The Umbrella Chronicles, Sega's Ghost Squad, and Medal of Honor will make use of the Zapper. Also, Medal of Honor will support 32 players in online play.
Ninja Gaiden Dragon Sword is headed to the DS
Super Smash Bros. Brawl release date is December 3rd
Metroid Prime 3 will have three sensitivity settings, and a new "lock-on free-aim" which essentially allows you to lock onto an enemy and then aim anywhere to hit it. The game also includes a new hyper mode.
Mario Kart for the Wii (will have online play) available first quarter next year.
New Wii Channel - Check Mii Out
Cusom Wii Wheel will be made available when Mario Kart is out.
Brain Age 2 for the DS will be available August 20th
Super Mario Galaxy will be available November 12, 2007
Rayman Raving Rabbids 2 coming to the Wii
Nintendo just introduced Wii Fit (video shows a guy doing push ups, and other fintess stuff)