REAL FUCKIN' SPOILERS N' SHIT
-You can turn into Bee Mario and fly n' shit. You can't sting though. :'(
-Ghost Mario can fly n' go through certain walls n' shit. Other Boos are GAY 4 U (seriously, there's hearts and everything) when they see you.
-Luigi is in the game. Not just playable...he's in the story mode in certain parts.
-The waggle mini-game where you surf on a manta ray-like creature is FUCKIN' AWFUL
-This game is actually really, really damn good and makes all the other 3D "platformers" out there look so horrible in comparison. You can dis Wii, but there's little to hate about this Mario title.
-N' shit.