There were no celebrities involved this time, as is often the case, but the public added a great deal of fun. It's one thing to do the bit in Los Angeles, where people in Hollywood are somewhat used to weirdness on the streets and largely accept it -- especially considering that they're next door to CBS at Television City, so the public (and army of tourists) not only accept it, in some ways they almost expect it. But this is clearly most-definitely not something Parisians are prepared for.
By the way, if my memory serves,when they aired this on CBS, the last part got cut off for time. I believe it ended after he thanks his fellow-cast members and says he's going to get a croissant. What happens next didn't make it on TV, and is exclusive to the video.
Here then is what they referred to instead as "Crosswalk: Le Musical."