Okay, I admit it---I'm overly critical. I will keep my complaints of today's puzzle to just one: the inclusion of CLI for "10% of MDX." Motion pictures and tv shows use Roman numerals for the copyright year so when they're shown overseas many years later, audiences won't be so likely to notice how old the films are. I have no idea why the Olympics and Super Bowl games use Roman numerals instead of simple numbers. But I don't like seeing Roman numerals in crosswords. Roman numerals are not only foreign, they're ancient---they go back to the 8th century BC.
I liked the cluing of MARCEAU as "Only actor to speak in Mel Brooks' Silent Movie." In that 1976 film, Brooks played a washed-up producer who hoped to make a comeback by filming a successful silent movie. Yes, Silent Movie was a silent movie about the filming of a silent movie. It did have music, though. And it had what is one of the most clever gags in movie history: Brooks phoned several actors to ask if they'd like to appear in his silent film and one of them was Marcel Marceau, a world-renowned mime, who exclaimed "No!" as he slammed the phone down. It was the only word spoken in the movie. Classic!