IGN rates the game 10 out of 10, rarely do they give out perfect or masterful scores. "This is the absolute pinnacle of Mario gameplay: everything that makes a Mario game so incredibly fun is represented here. Both in 2D and 3D."
Joystiq Nintendo says: "Super Mario Galaxy 2 is the best Mario game ever."
GameTrailers video review.
1UP rates the game an "A." "Nintendo shows that 'more of the same' doesn't have to be a bad thing."
Finally for more reviews, check out Metacritic where the game scores an average of 98.
Sunday, how long?