Just looking at the games which will (most likely) benefit from Nintendo's current line-up for the rest of the year:
Harvest Moon: Tree of Tranquility
Star Wars: The Force Unleashed
de Blob
SimCity Creator
Brothers in Arms: Road to Hill 30
LEGO Batman: The Videogame
Lost in Blue: Shipwrecked!
Samba de Amigo Wii
Rygar: The Battle of Argus
Monster Lab
Deadly Creatures
Shaun White Snowboarding: Road Trip
Ghostbusters: The Video Game
Naruto: Clash of Ninja Revolution 2
Spider-Man: Web of Shadows
Guitar Hero World Tour
MySims Kingdom
Call of Duty: World at War
FaceBreaker K.O. Party
Harry Potter and the Half-Blood Prince
Mushroom Men: The Spore Wars
Rayman Raving Rabbids TV Party
Star Wars: The Clone Wars -- Lightsaber Duels
Need for Speed Undercover
Rock Band 2
Skate It
Castlevania Judgment
Sonic Unleashed
Tales of Symphonia: Dawn of the New World
Tomb Raider Underworld
Little King's Story
Obviously, not all of those games will turn out to be good (or to sell that well) but any of them which are adequate and are marketed well will probably sell very well; and a lot better due to lack of competition.
