Just found this little bit of information and a really small pick from the E3 booth.
Its a chart detailing how to control mario and navigate the him round the levels
Super Mario Galaxy basic operation
* Mario moves with the analog stick of the Wii remote control and jumps with the A button of the wii controller.
* When the Wiimote is directed to the screen, a pointer or star type is indicated on the picture, To indicate an action in the screen simply direct the pointer to that place and push the B button.
* In some points of the game you need to shake the Nintendo Wii controller to start the action (move it from left to rigth)