It shoots at 1080 with a great sensor, and can mount some very nice lenses for a relatively low price. Plus the 5DmkII is no slouch in the low-light/high-iso arena.
Vincent Laforet has been at the forefront of this since the 5DmkII came out. See this: http://www.usa.canon.com/dlc/controller?act=GetArticleAct...
It has some warts since it is a still camera shooting video, but is still capable turning out some truly stunning results.