According to this site's WW million shipment list, Super Paper Mario, Rayman Raving Rabbids and Red Steel are the 5th, 6th, and 7th Wii games to ship 1 million copies around the world. Actual sell-through is probably only a month behind for Paper Mario, several more months for Rayman (though it will almost certainly hit the mark this Fall, with a reduced price and a sequel renewing interest), and for Red Steel until next year maybe.
Big Brain Academy, Mario Party 8, Mario Strikers, Metroid Prime 3 and Pokemon Battle Revolution are all probable million-sellers coming out before Fall. The more interesting 3rd party games to watch include Tiger Woods 08, Madden 08, Sonic and the Secret Rings, and Guitar Hero 3.
In comparison, PS3 still only has 1 game to ship 1 million copies, and 360 has 16, with the newest being Guitar Hero II.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.











