No not that kind of rock & roll, you can literally turn into a rock and start rolling around!
Though a bit short, the video features the new ability (mentioned above) that Mario has, you can destroy rocks and kill your enemies.
This is the 13th video of the 16 that will be published on the official Wii Youtube page.
check out the trailer below:
Update: This video is no longer available.
Super Mario Galaxy 2 will be released in the US on May 23, and in the UK on June 11.