"the ones that appear on the console are pretty bad like Dead Rising."
That was one, and it was bashed before it even came out. And then Modern Warfare showed Wii doesn't make HD games bad, so that's not a reason not to port to the Wii.
"which is sad, because we havent seen a true blockbuster third party game on the Wii."
Monster Hunter 3. The top selling third party game in Japanese home systems this generation.
A flashy-first game is awesome when it comes out. A great-first game is awesome forever.
Plus, just for the hell of it: Kelly Brook at the 2008 BAFTAs