No, that’s not New Super Mario Bros. Wii you’re watching there, it’s actually new gameplay for Super Mario Galaxy 2. This short clip of a 2D section from the game might have you thinking otherwise at first, but you’ll realise it’s not once the little plumber starts walking on the ceiling.
Also, try not to throw up; the video might not be very long but watching Mario get pulled from top to bottom made my head spin. Just imagine what playing it will be like. Bleurgh.