Watch Half Serious, Half Kidding for Free: How to Stream the Movie Online at 123Movies. . Marc with a C is the stage name of Orlando indie/DIY singer-songwriter Marc Sirdoreus and was formally a persona enacted on stage for over 20 years. This documentary covers their career using only filmed stage performances, interviews, and other video and audio releases published online by Marc or their audience. Made from a myriad of videos with view counts ranging from 15 to 30k, it chronicles their attempts to use music and lyrics to connect to and understand others, as well as their relationship to attention and performance as social media swallows up small artists to turn art into content.