1: Loz, Twilight Princess- by far my favorite Zelda.
2: Super Mario Galaxy 1 (and 2 because 2 is like DLC)- amazing rethinking's on the Platformers genre.
3: Skyward Sword- simply, the origin story.
4: Super Smash Bro's Brawl- who doesn't love frantically swinging a wiimote to then smash...