See what you can do with the 5d mark II video mode :

http://vincentlaforet.smugmug.com/gallery/6042742_wZKiA#377930419_dgxvY-A-LB
http://blog.vincentlaforet.com/2008/10/10/without-further-ado-reverie/
http://www.usa.canon.com/dlc/controller?act=GetArticleAct&articleID=2086