Michael Bay has posted the ShoWest sizzler real for Transformers: Revenge of the Fallen online. Check out the action compilation at the end.
Whoa. I just caught a glimpse of the real Devastator.
UPDATED: Looks like Vimeo page is no longer available. Unless things change, you can also see the video here, which has been posted on YouTube (but I don’t have the YouTube-specific URL.)