As for groundbreaking games...Yes, i'm looking forward to trying out resistance too and I know, I know, but this IS the best example:
What's the difference between Halo and Resistance? The time it's set in, the story(it's never the exact same) and uuuhhhh....uuuuh...uuuuhhhh...yeah. And no, size doesn't matter. Besides, who cares if the game is 100 hours long? Only an rpg(read: something like oblivion) can actually last for huge amounts of time. FPSes can be fun, but it's always the multiplayer that keeps the replay value up for most people (although not for me).
And i don't know how representative a poll on this forum would actually be in this subject, considering how it's a forum about a series that so far has only touched the ps2 when it comes to games.
Another good example for this is the fact that we're only like, four people actually liking the 360 here.
The Wii will most likely come on top since it's cheaper and has more simple yet creative games that, just like they're aiming at, are more likely the kind of games non-gamers would like to try out. Compare learning the controls on a ps2 or xbox controller you're not used to even holding in your hands, to just swinging a stick to play tennis.
Get my point?

And yeah, Nintendo is beating everything else in japan.