Alex Buono, Director of Photography for Saturday Night Live, has been shooting on DSLRs for quite some time (the intro for the show was in fact shot on a Canon 5D Mark II and 7D). Here, he gets his hands on a C300, shoots some spots for the show, and talks about his impressions of the camera (which are quite positive). Here's the video, courtesy Clint Milby:
Of the two spots Alex mentions, only one is available (the other has apparently expired):
The first video is from the San Francisco SuperMeet.