On January 26th, from 11am-3pm, the Gene Siskel Film Center will host an open house featuring the Canon C300. The event will include four short films shot on the C300 and opportunities for attendees to scope out the hardware and talk with technicians.
RSVPs are requested. You can find more information at: http://reelchicago.com/article/new-canon-cinema-eos-camera-debuts-here-jan-26
If you haven't seen it yet, here's a short shot on the C300 by Vincent Laforet that was released when the camera was first announced on November 3rd, 2011: